Properties of the Number 66125

Sixty-Six Thousand One Hundred Twenty-Five

Basics

Value: 66124 → 66125 → 66126

Parity: odd

Prime: No

Previous Prime: 66109

Next Prime: 66137

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 5 ³ × 23 ²

Divisors: 1, 5, 23, 25, 115, 125, 529, 575, 2645, 2875

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 10000001001001101

Octal: 201115

Duodecimal: 32325

Hexadecimal: 1024d

Square: 4372515625

Square Root: 257.14781741247583

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

E.g.f. satisfies A(x) = 1 + x·exp(x)*A(x)³. A364983

Numbers m such that σ(σ(m))/m is a square. A318084

Numbers k such that k, k²-1 and k²+1 are all fine, where a number m is fine if its prime factors are all less than m^1/3. A345896

Numbers that factorize into a prime number of factors all raised to different prime exponents and no number appears both as an exponent and as a prime factor. A114131

Numbers that in base 2 need four 'Reverse and Add' steps to reach a palindrome. A66125