Properties of the Number 25690

Twenty-Five Thousand Six Hundred Ninety

Basics

Value: 25689 → 25690 → 25691

Parity: even

Prime: No

Previous Prime: 25679

Next Prime: 25693

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 2 × 5 × 7 × 367

Divisors: 1, 2, 5, 7, 10, 14, 35, 70, 367, 734

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 110010001011010

Octal: 62132

Duodecimal: 12A4A

Hexadecimal: 645a

Square: 659976100

Square Root: 160.28100324118265

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 m such that 3·2^m - 1 is prime. A2235

Numbers n such that 2^2·n+2·n+1 is a prime. A173053

Expansion of ∑_k>=1 x^k*(1 + x^k)/(1 - x^k)⁴. A320941

Primitive terms of A388028. A388030

Expansion of (1-2·x-3·x²-(1-x)*sqrt(1-2·x-7·x²))/(8·x³). A122877

Number of (n+2)X(4+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00010101 00101011 or 01010101. A260923

Number of (n+2) X (7+2) 0..1 arrays with each 3 X 3 subblock having clockwise perimeter pattern 00010101 00101011 or 01010101. A260926

T(n,k)=Number of (n+2)X(k+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00010101 00101011 or 01010101. A260927

Exponent of 10 (value of j) in n-th number of form 8ⁱ*10^j. A25690

Number of self-inverse permutations p on [n] where the maximal displacement of an element equals 6. A238917