Properties of the Number 25500

Twenty-Five Thousand Five Hundred

Basics

Value: 25499 → 25500 → 25501

Parity: even

Prime: No

Previous Prime: 25471

Next Prime: 25523

Digit Sum: 12

Digital Root: 3

Palindrome: No

Factorization: 2 ² × 3 × 5 ³ × 17

Divisors: 1, 2, 3, 4, 5, 6, 10, 12, 15, 17

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

8509 Try Today's Challenge

Representations

Binary: 110001110011100

Octal: 61634

Duodecimal: 12910

Hexadecimal: 639c

Square: 650250000

Square Root: 159.68719422671313

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

Numbers n that raised to the powers from 1 to k (with k>=1) are multiple of the sum of their digits (n raised to k+1 must not be a multiple). Case k=11. A135196

Number of integer compositions of n that are the first sums of some composition with all parts > 1. A391235

G.f. satisfies: A(x)² = A(x²)² + 4·x. A223142

Absolute value of coefficient of term [x^n-7] in characteristic polynomial of maximum matrix A of size n X n, where n >= 7. Maximum matrix A(i,j) is MAX(i,j), where indices i and j run from 1 to n. A112463

Triangle T(n,k) read by rows: T(n,k) is the number of rooted hypertrees on n labeled vertices with k hyperedges, n >= 2, k >= 1. A210586

Number of prefix normal words of length n. A194850

a(n) = A255470(2ⁿ-1). A255471

φ(A033631(n)) {φ is the Euler totient function A000010}. A115620

G.f.: A(x,y) = ∑_n>=0 xⁿ * ∏_k=1..n (k + x·y) / (1 + k·x*y), as a triangle read by rows. A231171

Numbers n which appear at least twice in A037278(n), concatenation of their divisors written in base 10. A248323