Properties of the Number 66025

Sixty-Six Thousand Twenty-Five

Basics

Value: 66024 → 66025 → 66026

Parity: odd

Prime: No

Previous Prime: 65993

Next Prime: 66029

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 5 ² × 19 × 139

Divisors: 1, 5, 19, 25, 95, 139, 475, 695, 2641, 3475

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10000000111101001

Octal: 200751

Duodecimal: 32261

Hexadecimal: 101e9

Square: 4359300625

Square Root: 256.9533031505919

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) = 49n² - 28n - 20. A118058

Numbers k such that 2^{2·k - 1} - 1 is prime. A138576

a(n) = n*(n + 1)*(11·n² + 11·n - 10)/24. A264854

Numbers k such that gcd(σ(k), σ(k+1)) > k. A66025