Properties of the Number 25969

Twenty-Five Thousand Nine Hundred Sixty-Nine

Basics

Value: 25968 → 25969 → 25970

Parity: odd

Prime: Yes

Previous Prime: 25951

Next Prime: 25981

Digit Sum: 31

Digital Root: 4

Palindrome: No

Factorization: 25969

Divisors: 1, 25969

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 110010101110001

Octal: 62561

Duodecimal: 13041

Hexadecimal: 6571

Square: 674388961

Square Root: 161.14899937635357

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

Crystal ball sequence for hexagonal close-packing. A7202

Primes p such that 2p²-1, 3p²-2 and 4p²-3 are also prime. A213079

Expansion of (1/x) * Series_Reversion( x * (1-x) / B(x) ), where B(x) is the g.f. of A001764. A381911

Number of (w,x,y,z) with all terms in {0,...,n} and max{w,x,y,z}>=2·min{w,x,y,z}. A212741

Prime numbers congruent to 49 or 121 modulo 240 representable by x² + 960·y². A325090

Number of identity trees with n nodes where the maximal outdegree (branching factor) equals 4. A245749

Numbers k such that the period of the continued fraction for sqrt(k) contains exactly 98 ones. A31866

Primes whose consecutive digits differ by 3 or 4. A48415

Start with a(1)=1; for n >= 1, a(n+1)=a(n)+a(k) with k=[n - n-th digit of sqrt(2)]. If k<0 or k=0, then a(k)=0. A133393

Primes p such that q·p+-Mod(p,q) are primes, for q=7. A178387