Properties of the Number 25609

Twenty-Five Thousand Six Hundred Nine

Basics

Value: 25608 → 25609 → 25610

Parity: odd

Prime: Yes

Previous Prime: 25603

Next Prime: 25621

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 25609

Divisors: 1, 25609

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 110010000001001

Octal: 62011

Duodecimal: 129A1

Hexadecimal: 6409

Square: 655820881

Square Root: 160.0281225285106

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 p such that p, p+12, p+24 are consecutive primes. A52188

Smallest odd prime p such that n = (p - 1) / ord_p(2). A101208

Primes of form (prime(n)² + prime(n+1)²)/2. A93343

Number of n-celled polyominoes with exactly 4 holes. A89456

T(n,k) is the number of non-equivalent distinguishing partitions of the cycle on n vertices with exactly k parts. Regular triangle read by rows, n >= 1, 1 <= k <= n. A324802

Average of squares of successive primes: a(n) = (prime(n+1)² + prime(n)²)/2, with n >= 2. A75892

Primes of the form k² + 9. A138353

Numerators of the partial sums of the squares of the expansion coefficients of 1/sqrt(1-x). Also the numerators of the Landau constants. A277233

Smallest prime p such that the multiplicative order of 4 modulo p is 2·n, or 0 if no such prime exists. A372797

Greatest prime factor of prime(n+1)² + prime(n)². A69485