Properties of the Number 25689

Twenty-Five Thousand Six Hundred Eighty-Nine

Basics

Value: 25688 → 25689 → 25690

Parity: odd

Prime: No

Previous Prime: 25679

Next Prime: 25693

Digit Sum: 30

Digital Root: 3

Palindrome: No

Factorization: 3 × 8563

Divisors: 1, 3, 8563, 25689

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 110010001011001

Octal: 62131

Duodecimal: 12A49

Hexadecimal: 6459

Square: 659924721

Square Root: 160.27788368954714

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

T(n,k)=Number of nXk 0..1 arrays avoiding 0 0 1 and 0 1 0 horizontally and 0 0 1 and 1 0 0 vertically. A207442

Numbers m such that 20·m + 1, 80·m + 1, 100·m + 1, and 200·m + 1 are all primes. A372186

a(n) = 38·n² + 1. A158593

Shifts left by 2 places under series reversion. A309254

Sequence shifts left nine places under Weigh transform with a(n) = signum(n) for n<9. A316081

Solution of the complementary equation a(n) = a(n-1) + a(n-2) + b(n-1)*b(n), where a(0) = 2, a(1) = 4, b(0) = 1, b(1) = 3, b(2) = 5, and (a(n)) and (b(n)) are increasing complementary sequences. A296276

Nonnegative numbers n such that 6·2ⁿ-1 is prime. A164523

Number of nX6 0..1 arrays avoiding 0 0 1 and 0 1 0 horizontally and 0 0 1 and 1 0 0 vertically. A207440

Number of 4Xn 0..1 arrays avoiding 0 0 1 and 0 1 0 horizontally and 0 0 1 and 1 0 0 vertically. A207444

Isolated deficient numbers that are divisible by 3. A273255