Properties of the Number 25511

Twenty-Five Thousand Five Hundred Eleven

Basics

Value: 25510 → 25511 → 25512

Parity: odd

Prime: No

Previous Prime: 25471

Next Prime: 25523

Digit Sum: 14

Digital Root: 5

Palindrome: No

Factorization: 97 × 263

Divisors: 1, 97, 263, 25511

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 110001110100111

Octal: 61647

Duodecimal: 1291B

Hexadecimal: 63a7

Square: 650811121

Square Root: 159.72163284915416

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 doubly-fractal sequence. Erase the first (leftmost) digit of every integer: what is left is the sequence itself. The erased digits, one by one, form also the sequence itself. A127274

Number of Schur rings over Z_5ⁿ. A270786

a(n) = n⁷ + 6·n⁶ + 26·n⁵ + 73·n⁴ + 152·n³ + 222·n² + 203·n + 8. A270871

a(n) = 25·n² + 15·n + 1021. A214732

Number of partitions p of n such that (# 1s in p) = (#1s in conjugate(p)). A240691

Triangle, read by rows, defined by T(n, k) = b(n) - b(k) - b(n-k) + 1, where b(n) = 5·b(n-1) - 4·b(n-2) + 3·b(n-3) - 2·b(n-4) - b(n-5) and b(0) = 0, b(1) = 1, b(2) = 5, b(3) = 21, b(4) = 88. A176483

Array T(n,k) of number of Schur rings over Z_pⁿ where n>=1 for p odd and k-th prime (by descending antidiagonals). A320948

Least k>1 such that reverse complement of first n terms of A006928 repeats beginning at k-th term. A25511