Properties of the Number 64125

Sixty-Four Thousand One Hundred Twenty-Five

Basics

Value: 64124 → 64125 → 64126

Parity: odd

Prime: No

Previous Prime: 64123

Next Prime: 64151

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 3 ³ × 5 ³ × 19

Divisors: 1, 3, 5, 9, 15, 19, 25, 27, 45, 57

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1111101001111101

Octal: 175175

Duodecimal: 31139

Hexadecimal: fa7d

Square: 4112015625

Square Root: 253.22914524201198

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) = 3ⁿ*∑_k=0..n binomial(2·k,k)/3^k. A132310

Digits d in decimal expansion of n replaced with d³. A48390

Iterates of A234742, starting from value a(0) = 1361, with a(1) = A234742(a(0)), a(2) = A234742(a(1)), etc. A260441

Number of partitions of n such that neither the number of parts nor the number of distinct parts is a part. A241380

Number of partitions of n such that (number parts having multiplicity 1) is a part or (number of parts > 1) is a part. A241515

Least integers that satisfy sum(n>0,1/a(n)^z)=0, where a(1)=1, a(n+1)>a(n) and z=I·2. A84816

Deficient numbers n having a companion m > n such that σ(n)/n = σ(m)/m. A212608

a(n) = ∑_{k=0..floor(n/2)} Catalan(n-2·k). A360273

Antidiagonal sums of number triangle A106270. A106272

a(n) is the least K such that K·6*M(n) - 1 and K·6*M(n) + 1 are twin primes, where M(n) = n-th Mersenne prime. A126612