Properties of the Number 66425

Sixty-Six Thousand Four Hundred Twenty-Five

Basics

Value: 66424 → 66425 → 66426

Parity: odd

Prime: No

Previous Prime: 66413

Next Prime: 66431

Digit Sum: 23

Digital Root: 5

Palindrome: No

Factorization: 5 ² × 2657

Divisors: 1, 5, 25, 2657, 13285, 66425

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10000001101111001

Octal: 201571

Duodecimal: 32535

Hexadecimal: 10379

Square: 4412280625

Square Root: 257.73047937719747

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

Number of free generators of degree n of symmetric polynomials in 7-noncommuting variables. A124295

From Apery continued fraction for ζ(3): ζ(3)=6/(5-1⁶/(117-2⁶/(535-3⁶/(1463...)))). A6221

a(n) = 46·n² + 1. A158632

a(1) = 1; thereafter a(n) is the smallest number > a(n-1) such that a(n) minus any sum of distinct earlier terms is not already in the sequence. A66425

Decimal expansion of (π!)! = γ(γ(π+1)+1). A111197