Properties of the Number 25242

Twenty-Five Thousand Two Hundred Forty-Two

Basics

Value: 25241 → 25242 → 25243

Parity: even

Prime: No

Previous Prime: 25237

Next Prime: 25243

Digit Sum: 15

Digital Root: 6

Palindrome: No

Factorization: 2 × 3 × 7 × 601

Divisors: 1, 2, 3, 6, 7, 14, 21, 42, 601, 1202

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 110001010011010

Octal: 61232

Duodecimal: 12736

Hexadecimal: 629a

Square: 637158564

Square Root: 158.87731115549508

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 k such that 3^k + 10 is prime. A217137

a(n) = ∑_{1 <= i, j, k <= n} gcd(i,j,k). A344522

Decimal Goedelization of antitheorems from propositional calculus, in Richard C. Schroeppel's metatheory of A101273. A100200

θ series of A₆ lattice. A8446

Number of cubic equations ax³ + bx² + cx + d = 0 with integer coefficients |a|,|b|,|c|,|d| <= n, a <> 0, having three distinct real roots. A155191

a(n) = a(1)*a(n-1) + a(2)*a(n-2) + ...+ a(n-1)*a(1) for n >= 5, with initial values 1,1,1,1. A25268

a(n) = n*(14·n + 13). A195028

Numbers n for which there are exactly ten k such that n = k + reverse(k). A72434

a(n) is the first number that is the sum of two palindromic primes in exactly n ways. A379138

Expansion of F(x) where F(x) = 1 + x / (1 - x / F(-x²) ). A238430