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Number

325

  • Positive
  • Odd
  • Composite
  • 3 digits

325 is an odd 3-digit integer and a composite number. It has 6 divisors and a digital root of 1.

Number properties

ParityOddnot divisible by 2
SignPositive
PrimalityComposite
Absolute value325
Digit count3
Digit sum10
Digital root1repeated digit sum
PalindromicNoreads differently backwards
Triangular numberYes, the 25th triangular number
Happy numberNosquared-digit sums reach 1
Harshad numberNodivisible by its own digit sum

Factors & divisors

Prime factorisation5^2 × 13
Distinct prime factors25, 13
Number of divisors6
Sum of divisors σ(n)434
Aliquot sum109sum of the proper divisors
ClassificationDeficientthe aliquot sum is less than the number
Euler's totient φ(n)240integers below n that share no factor with it
SquarefreeNohas a repeated prime factor
All divisors1, 5, 13, 25, 65, 3256 in total

Arithmetic

Previous number324
Next number326
Double650
Half162.5
Square105,625
Cube34,328,125
Square root18.027756377≈irrational, shown to 9 decimal places
Cube root6.875344335≈
Negation-325
Reciprocal0.0030769231≈
325 factorial7439241745582082543735344942210561663839… (677 digits)

Representations

Decimal325
Binary1010001019 bits
Octal505
Hexadecimal145
Base 3691
Roman numeralCCCXXV
In wordsthree hundred and twenty-five
Ordinalthree hundred and twenty-fifth
Scientific notation3.25 × 10^2
Engineering notation325

Nearest landmarks

Next prime331+6
Previous prime317−8
Distance to nearest prime6
Nearest square below324
Nearest square above361

Powers & multiples

325 to the power 2105,625
325 to the power 334,328,125
325 to the power 411,156,640,625
325 to the power 53,625,908,203,125
First ten multiples325, 650, 975, 1,300, 1,625, 1,950, 2,275, 2,600, 2,925, 3,250
Powers of twoBetween 2^8 (256) and 2^9 (512)

Divisibility tests

Divisible by 2No, remainder 1
Divisible by 3No, remainder 1
Divisible by 4No, remainder 1
Divisible by 5Yes
Divisible by 6No, remainder 1
Divisible by 7No, remainder 3
Divisible by 8No, remainder 5
Divisible by 9No, remainder 1
Divisible by 10No, remainder 5
Divisible by 11No, remainder 6
Divisible by 12No, remainder 1
Divisible by 100No, remainder 25

Collatz (3n + 1) trajectory

Steps to reach 124the total stopping time
Highest value reached9763× the starting value
Reaches 1Yesthe Collatz conjecture says every positive integer does, but it is unproven
First steps325 → 976 → 488 → 244 → 122 → 61 → 184 → 92 → 46 → 23 → …
Last steps… → 5 → 16 → 8 → 4 → 2 → 1

As a percentage & fraction

As a percentage32,500%
325% as a decimal3.25
325% of 100325
325% of 1,0003,250
As a fraction of 100325/100

Read another way

As seconds5 minutes and 25 seconds
As bytes325 B
As a 24-bit colour#000145

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Neighbouring numbers

Nearby primes

Also reads as

#332255 (colour)

  • #332255
  • Violet
  • Dark
  • Nearest: Dark slateblue

#332255 is a violet with RGB values 51, 34, 85 and HSL 260°, 43%, 23%. It is a dark colour, so white text on it reaches 14:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

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Colour values

#332255#332255
HEX#332255
HEX (short)#325
RGBrgb(51, 34, 85)
RGB (0–1)0.2, 0.1333, 0.3333
RGB percentages20%, 13.3%, 33.3%
HSLhsl(260, 42.9%, 23.3%)
HSV / HSBhsv(260, 60%, 33.3%)
CMYK40%, 60%, 0%, 66.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,351,125
CSS custom property--colour: #332255;

Brightness & contrast

Relative luminance0.02504WCAG 2.x, 0 is black and 1 is white
Perceived brightness47.7 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 13.99:1
Contrast with white13.99:1WCAG normal text: AAA
Contrast with black1.5:1WCAG normal text: Fail
Greyscale equivalent#292929
Inverted#CCDDAA

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#0B2C57no red cones; affects about 1% of men; ΔE 15 from the original
Deuteranopia#102B54no green cones; the most common form, about 1% of men; ΔE 14.9 from the original
Tritanopia#2B2C37no blue cones; rare, and affects men and women equally; ΔE 28.3 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text13.99:1WCAG large text: AAA
Contrast with black, large text1.5:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 19.5Midnight blue · ΔE 23.8Rebecca purple · ΔE 32.4Indigo · ΔE 39.5Black · ΔE 39.7Purple · ΔE 40.3
Nearest named CSS colourDark slateblue (#483D8B)ΔE 19.5, a distinctly different colour
Hue familyviolet
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#445522
Analogous#222A55, #4C2255
Triadic#553322, #225533
Split complementary#554C22, #2B5522
Tetradic#55222B, #445522, #22554D

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#9479CA
Lighter +30%#7755BB
Lighter +20%#5F3F9E
Lighter +10%#493179
Darker −10%#1D1331
Darker −20%#07050C
Darker −30%#000000
Darker −40%#000000
More saturated +25%#2E1364
Less saturated −25%#383146

Channel breakdown

R51
G34
B85
Red51 (20%)
Green34 (13.3%)
Blue85 (33.3%)
Hue260°
Saturation (HSL)42.86%
Lightness23.33%
Dominant channelBlue
Hex per channelR 33 · G 22 · B 55

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Every value on this page was computed from “325” by Nerdulator’s number engine. Nothing here was retrieved from a database of answers or written by a model.