Properties of the Number 25009

Twenty-Five Thousand Nine

Basics

Value: 25008 → 25009 → 25010

Parity: odd

Prime: No

Previous Prime: 24989

Next Prime: 25013

Digit Sum: 16

Digital Root: 7

Palindrome: No

Factorization: 89 × 281

Divisors: 1, 89, 281, 25009

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 110000110110001

Octal: 60661

Duodecimal: 12581

Hexadecimal: 61b1

Square: 625450081

Square Root: 158.14234094637652

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 that are the products of two distinct primes such that 2·k-1, 4·k-3, 8·k-7, 16·k-15 and 32·k-31 are also products of two distinct primes. A177214

Numbers k that are the products of two distinct primes such that 2·k-1, 4·k-3, 8·k-7, 16·k-15, 32·k-31 and 64·k-63 are also products of two distinct primes. A177215

Number of partitions of n such that (number parts having multiplicity 1) is not a part and (number of parts > 1) is not a part. A241514

Number of nonnegative integer matrices with sum of entries equal to n and no zero rows or columns, whose nonzero entries are all distinct. A321659

a(n) = ceiling(Fibonacci(n)/3). A293543

a(n) = number of primes that end in 9 among the first 10ⁿ primes. A300400

a(n) = ( (8 + sqrt(7))ⁿ - (8 - sqrt(7))ⁿ )/(2·sqrt(7)). A154249

a(n) = A168174(n)-10¹². A168248

Numbers k such that (25·10^k - 13)/3 is prime. A281142

Expansion of 1/((1-x)(1-9x)(1-10x)(1-11x)). A25009