Properties of the Number 90025

Ninety Thousand Twenty-Five

Basics

Value: 90024 → 90025 → 90026

Parity: odd

Prime: No

Previous Prime: 90023

Next Prime: 90031

Digit Sum: 16

Digital Root: 7

Palindrome: No

Factorization: 5 ² × 13 × 277

Divisors: 1, 5, 13, 25, 65, 277, 325, 1385, 3601, 6925

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10101111110101001

Octal: 257651

Duodecimal: 44121

Hexadecimal: 15fa9

Square: 8104500625

Square Root: 300.04166377354994

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

a(n) = 625·n² + 25. A157915

a(n) = binomial(n, 2) + 6·binomial(n, 4). A327319

Numbers k such that the least term in the periodic part of the continued fraction for sqrt(k) is 24. A31702

Numbers n with property that 42·n+37 is in A175284. A175285

Rao Uppuluri-Carpenter numbers (or complementary Bell numbers): e.g.f. = exp(1 - exp(x)). A587

Apery (Apéry) numbers: ∑_k=0..n (binomial(n,k)*binomial(n+k,k))². A5259

Apéry numbers: a(n) = ∑_k=0..n binomial(n,k)² * binomial(n+k,k). A5258

Coefficients in expansion of Eisenstein series E₂ (also called E₁ or G₂). A6352

a(n) = ∑_{k = 0..n} binomial(n,k)⁴. A5260

Number of n-node triangulations of sphere in which every node has degree >= 4. A103