Properties of the Number 25565

Twenty-Five Thousand Five Hundred Sixty-Five

Basics

Value: 25564 → 25565 → 25566

Parity: odd

Prime: No

Previous Prime: 25561

Next Prime: 25577

Digit Sum: 23

Digital Root: 5

Palindrome: No

Factorization: 5 × 5113

Divisors: 1, 5, 5113, 25565

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 110001111011101

Octal: 61735

Duodecimal: 12965

Hexadecimal: 63dd

Square: 653569225

Square Root: 159.89058759038946

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

Number of partitions of n² into distinct odd parts. A281489

a(n) = minimal positive k such that the concatenation of decimal digits n and n+1 is a divisor of the concatenation of n+2, n+2+1, ..., n+2+k. A332830

Number of aperiodic necklaces (Lyndon words) with k<=5 black beads and n-k white beads. A277629

Numbers k such that k and k² use only the digits 2, 3, 5, 6 and 9. A137082

Number of binary strings of length n with no substrings equal to 0001 0110 or 1101. A164481

Negated inverse Euler transform of {-1 if n is a triangular number else 0, n > 0} = -A010054. A320784

Discriminants of real quadratic fields with class number 2 and related continued fraction period length of 11. A51976

a(n) = T(n,n-1), where T is array defined in A025564. A25565