Properties of the Number 15625

Fifteen Thousand Six Hundred Twenty-Five

Basics

Value: 15624 → 15625 → 15626

Parity: odd

Prime: No

Previous Prime: 15619

Next Prime: 15629

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 5 ⁶

Divisors: 1, 5, 25, 125, 625, 3125, 15625

Polygonal

Triangular: No

Square: Yes

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

4823 Try Today's Challenge

Representations

Binary: 11110100001001

Octal: 36411

Duodecimal: 9061

Hexadecimal: 3d09

Square: 244140625

Square Root: 125

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

The cubes: a(n) = n³. A578

Powers of 5: a(n) = 5ⁿ. A351

Sixth powers: a(n) = n⁶. A1014

Numbers whose sum of divisors is prime. A23194

Numbers with 7 divisors. 6th powers of primes. A30516

a(n) = nⁿ⁺¹. A7778

Triangle read by rows. T(n, m) are the coefficients of Sidi polynomials. A75513

Self-inverse permutation of natural numbers: a(1)=1, a(p_i) = 2ⁱ, and if n = p_i1 * p_i2 * p_i3 * ... * p_ik-1 * p_ik, where p's are primes, with their indexes are sorted into nondescending order: i1 <= i2 <= i3 <= ... <= i_k-1 <= ik, then a(n) = 2^i1-1 * 3^i2-i1 * 5^i3-i2 * ... * p_k^1+(ik-i_k-1). Here k = A001222(n) and ik = A061395(n). A241909

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

Perfect powers m^k where m is a positive integer and k >= 3. A76467