Properties of the Number 25569

Twenty-Five Thousand Five Hundred Sixty-Nine

Basics

Value: 25568 → 25569 → 25570

Parity: odd

Prime: No

Previous Prime: 25561

Next Prime: 25577

Digit Sum: 27

Digital Root: 9

Palindrome: No

Factorization: 3 ³ × 947

Divisors: 1, 3, 9, 27, 947, 2841, 8523, 25569

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 110001111100001

Octal: 61741

Duodecimal: 12969

Hexadecimal: 63e1

Square: 653773761

Square Root: 159.90309565483716

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

a(n) = -3·a(n-1) + a(n-3), with a(0)=0, a(1)=6, and a(2)=-15. A215917

Numbers k such that (2·k)!/(2*(k!)²)+1 is prime. A112863

Total sum of major indices of heapable permutations of length n. A387955

Numbers whose arithmetic derivatives are a permutation of their digits. A225902

A126789 with zeros removed. A176623

Expansion of ∏_k>=1 (1 + x^k*(k+1/2))^k*(k+1/2). A298850

Number of 5Xn 0..1 arrays avoiding 0 0 0 and 0 1 1 horizontally and 0 0 0 and 1 1 1 vertically. A207349

T(2n-1,n), where T is the array defined in A025564. A25569