Properties of the Number 81425

Eighty-One Thousand Four Hundred Twenty-Five

Basics

Value: 81424 → 81425 → 81426

Parity: odd

Prime: No

Previous Prime: 81421

Next Prime: 81439

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 5 ² × 3257

Divisors: 1, 5, 25, 3257, 16285, 81425

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10011111000010001

Octal: 237021

Duodecimal: 3B155

Hexadecimal: 13e11

Square: 6630030625

Square Root: 285.3506614676055

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

Numerators of the continued fraction convergents of the decimal concatenation of the upper bounds of twin primes. A128846

Class 6- primes (for definition see A005109). A81425