Properties of the Number 25439

Twenty-Five Thousand Four Hundred Thirty-Nine

Basics

Value: 25438 → 25439 → 25440

Parity: odd

Prime: Yes

Previous Prime: 25423

Next Prime: 25447

Digit Sum: 23

Digital Root: 5

Palindrome: No

Factorization: 25439

Divisors: 1, 25439

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 110001101011111

Octal: 61537

Duodecimal: 1287B

Hexadecimal: 635f

Square: 647142721

Square Root: 159.49608145656745

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

Primes of the form ((p+1)/2)²+((p-1)/2), where p is prime. A163419

The 300-degree spoke (or ray) of a hexagonal spiral of Ulam. A244804

Primes p such that |100-p|, |1000-p|, |10000-p| and |100000-p| are also primes. A126021

a(n) = A003010(n-2) mod (2ⁿ - 1). A317977

a(n) = [xⁿ] x * ∏_j>=0 (1 + x^{2^j} + n·x^{2^(j+1})). A342643

Primes of the form prime(n+2)*prime(n+1) - prime(n) +- 1. A294625

Primes p such that p + 10ⁱ are prime for i from 1 to 5. A387703

Number of partitions of n into 6 distinct squares. A25439