Properties of the Number 25865

Twenty-Five Thousand Eight Hundred Sixty-Five

Basics

Value: 25864 → 25865 → 25866

Parity: odd

Prime: No

Previous Prime: 25849

Next Prime: 25867

Digit Sum: 26

Digital Root: 8

Palindrome: No

Factorization: 5 × 7 × 739

Divisors: 1, 5, 7, 35, 739, 3695, 5173, 25865

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 110010100001001

Octal: 62411

Duodecimal: 12B75

Hexadecimal: 6509

Square: 668998225

Square Root: 160.82599292402955

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

Same rule as Aitken triangle (A011971) except a(0,0)=1, a(1,0)=0. A46934

Sequence formed from rows of triangle A046934. A46935

a(1) = 1+2-3 = 0, a(2) = 4+5+6-7 = 8, a(3) = 8+9+10+11-12 = 26, a(4) = 13+14+15+16+17-18 = 57, ... A111694

Unlabeled trees with n nodes rooted at 2 indistinguishable roots that are leaves. A303840

a(n) = (n+5)³ - n³. A38867

Main diagonal of array A[k,n] = n-th sum of k consecutive k-gonal numbers, k>2. A130424

Numbers k such that k and k² use only the digits 2, 5, 6, 8 and 9. A137114

Expansion of e.g.f. exp( (exp(3*(exp(x)-1))-1)/3 ). A369785

Number of walks within N³ (the first octant of Z³) starting at (0,0,0) and consisting of n steps taken from {(-1, -1, 1), (-1, 0, 1), (-1, 1, -1), (1, 0, -1), (1, 0, 1)}. A149149

Expansion of 1 / (1 + ∑_k>=1(-x)^Lucas(k)). A357384