Properties of the Number 5625

Five Thousand Six Hundred Twenty-Five

Basics

Value: 5624 → 5625 → 5626

Parity: odd

Prime: No

Previous Prime: 5623

Next Prime: 5639

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 3 ² × 5 ⁴

Divisors: 1, 3, 5, 9, 15, 25, 45, 75, 125, 225

Polygonal

Triangular: No

Square: Yes

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 1010111111001

Octal: 12771

Duodecimal: 3309

Hexadecimal: 15f9

Square: 31640625

Square Root: 75

Classification

Fibonacci: No

Bell Number: No

Factorial Number: No

Regular Number: Yes

Perfect Number: No

Special

Kaprekar Constant: No

Munchausen Constant: No

Armstrong Number: No

Kaprekar Number: No

Catalan Number: No

Vampire Number: No

Taxicab Number: No

Super Prime: No

Friedman Number: No

Fermat Number: No

Cullen Number: No

OEIS Sequences

Primorial base exp-function: digits in primorial base representation of n become the exponents of successive prime factors whose product a(n) is. A276086

Odd squares: a(n) = (2n+1)². Also centered octagonal numbers. A16754

Numbers k that divide the (right) concatenation of all numbers <= k written in base 25 (most significant digit on left). A29470

Numbers of the form 3ⁱ*5^j with i, j >= 0. A3593

Trimorphic numbers: n³ ends with n. Also m-morphic numbers for all m > 5 such that m-1 is not divisible by 10 and m == 3 (mod 4). A33819

Perfect powers of nonsquarefree numbers k that are not squareful. A386762

Numbers whose prime factors are 3 and 5. A33849

a(n) = (3·n)². A16766

a(0) = 0, a(1) = 1; a(n) = max { 4·a(k) + a(n-k) | 1 <= k <= n/2 }, for n > 1. A116520

Squares n² such that floor(n²/9) is again a square. A204503