Properties of the Number 25246

Twenty-Five Thousand Two Hundred Forty-Six

Basics

Value: 25245 → 25246 → 25247

Parity: even

Prime: No

Previous Prime: 25243

Next Prime: 25247

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 2 × 13 × 971

Divisors: 1, 2, 13, 26, 971, 1942, 12623, 25246

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 110001010011110

Octal: 61236

Duodecimal: 1273A

Hexadecimal: 629e

Square: 637360516

Square Root: 158.88989898668825

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

Expansion of ∏_k>=1 (1 + k·x^k)^k. A266891

Expansion of ∑_k>=1 k³ * x^k/(1 - x^k)³. A366135

a(n) = A045820(n)/2. A45822

G.f. satisfies A(x) = 1 + ∑_n>=1 xⁿ * A(x)^prime(n). A193074

Trajectory of 3 under map n->27n+1 if n odd, n->n/2 if n even. A37111

a(1) = 1; a(n+1) = sum of terms in continued fraction for sum of continued fractions, [a(n); a(n-1), a(n-2),...,a(1)] and [0; a(n), a(n-1), a(n-2),...,a(1)]. A58083

Number of ways, counted up to symmetry, to build a contiguous building with n LEGO blocks of size 1 X 2 which is symmetric after a rotation by 180 degrees. A123763

a(n) = a(1)*a(n-1) + a(2)*a(n-2) + ... + a(n-3)*a(3) for n >= 4, with initial terms 1, 0, 1, 1. A25246