Properties of the Number 66525

Sixty-Six Thousand Five Hundred Twenty-Five

Basics

Value: 66524 → 66525 → 66526

Parity: odd

Prime: No

Previous Prime: 66523

Next Prime: 66529

Digit Sum: 24

Digital Root: 6

Palindrome: No

Factorization: 3 × 5 ² × 887

Divisors: 1, 3, 5, 15, 25, 75, 887, 2661, 4435, 13305

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 10000001111011101

Octal: 201735

Duodecimal: 325B9

Hexadecimal: 103dd

Square: 4425575625

Square Root: 257.9244075305786

Classification

Fibonacci: No

Bell Number: No

Factorial Number: No

Regular Number: No

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

Triangle read by rows: T(n,k) is the number of achiral colorings of the facets of a regular n-dimensional orthotope using exactly k colors. Row n has 2n columns. A325011

G.f. A(x) satisfies A(x) = 1 + x + x·A(x)^5/2. A366452

Numbers k such that k and k² use only the digits 2, 4, 5, 6 and 7. A137094

Number of ordered pairs of endofunctions f,g on a set of n elements satisfying f(f(f(x))) = g(g(g(x))). A235326

Primes of form ∑_k=1..n prime(k)³. A66525

G.f. A(x) satisfies A(x)² = 1 +x + x·A(x)⁵. A259757