Properties of the Number 25281

Twenty-Five Thousand Two Hundred Eighty-One

Basics

Value: 25280 → 25281 → 25282

Parity: odd

Prime: No

Previous Prime: 25261

Next Prime: 25301

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 3 ² × 53 ²

Divisors: 1, 3, 9, 53, 159, 477, 2809, 8427, 25281

Polygonal

Triangular: No

Square: Yes

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 110001011000001

Octal: 61301

Duodecimal: 12769

Hexadecimal: 62c1

Square: 639128961

Square Root: 159

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

Tribonacci numbers: a(n) = a(n-1) + a(n-2) + a(n-3) with a(0)=a(1)=a(2)=1. A213

Partial sums of A299259. A299265

a(n) = (6·n+3)². A16946

Odd refactorable numbers. A36896

a(n) = (11·n + 5)². A17450

Squares which are the arithmetic mean of two consecutive primes. A69495

Perfect squares which are neither the sum nor the difference of two primes. A106573

Squares that become prime when their most significant (or leftmost) digit is removed. A225873

Squares with initial digit '2'. A45785

a(n) = (7·n + 5)². A17042