Properties of the Number 25240

Twenty-Five Thousand Two Hundred Forty

Basics

Value: 25239 → 25240 → 25241

Parity: even

Prime: No

Previous Prime: 25237

Next Prime: 25243

Digit Sum: 13

Digital Root: 4

Palindrome: No

Factorization: 2 ³ × 5 × 631

Divisors: 1, 2, 4, 5, 8, 10, 20, 40, 631, 1262

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 110001010011000

Octal: 61230

Duodecimal: 12734

Hexadecimal: 6298

Square: 637057600

Square Root: 158.871016865884

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

G.f. satisfies A(x) = (1 + x·A(x)) * (1 + x·A(x)³). A198953

The Wiener index of a chain of n squares joined at vertices (i.e., joined like <><><>...<>; here <> is a square!). A143943

G.f. = φ⁴, where φ = g.f. for A028930. A328529

Numbers k such that (265·10^k + 17)/3 is prime. A272523

Number of Schroeder n-paths containing no FFs. A73157

Irregular table read by rows: The number of k-faced polyhedra, where k>=4, created when an n-antiprism, formed from two n-sided regular polygons joined by 2n adjacent alternating triangles, is internally cut by all the planes defined by any three of its vertices. A338808

a(n) = a(1)*a(n-1) + a(2)*a(n-2) + ...+ a(n-2)*a(2) for n >= 3. A25240