Properties of the Number 25989

Twenty-Five Thousand Nine Hundred Eighty-Nine

Basics

Value: 25988 → 25989 → 25990

Parity: odd

Prime: No

Previous Prime: 25981

Next Prime: 25997

Digit Sum: 33

Digital Root: 6

Palindrome: No

Factorization: 3 × 8663

Divisors: 1, 3, 8663, 25989

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 110010110000101

Octal: 62605

Duodecimal: 13059

Hexadecimal: 6585

Square: 675428121

Square Root: 161.2110418054545

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

Triangle, read by rows, that transforms diagonals in the table of coefficients of successive iterations of x+x²+x³ (cf. A166880). A166884

Row sums of A131235. A131236

Column 3 of triangle A166884. A166887

Expansion of ∑_k>=0 x^k² / ∏_j=1..k (1 - x^j)^j. A318771

a(n) = a(1) + a(2) + ... + a(n-1) - a(m) for n >= 4, where m = 2·n - 2 - 2^p+1 and p is the unique integer such that 2^p < n - 1 <= 2^p+1, starting with a(1) = 1 and a(2) = a(3) = 3. A49927

Triangle T(n,k), read by rows n>=0 with terms k=1..3ⁿ, where row n lists the coefficients in the n-th iteration of (x+x²+x³). A166880

Row sums of triangle A166884. A229112

Expansion of 1/((1-2x)(1-5x)(1-6x)(1-10x)). A25989