Properties of the Number 64825

Sixty-Four Thousand Eight Hundred Twenty-Five

Basics

Value: 64824 → 64825 → 64826

Parity: odd

Prime: No

Previous Prime: 64817

Next Prime: 64849

Digit Sum: 25

Digital Root: 7

Palindrome: No

Factorization: 5 ² × 2593

Divisors: 1, 5, 25, 2593, 12965, 64825

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1111110100111001

Octal: 176471

Duodecimal: 31621

Hexadecimal: fd39

Square: 4202280625

Square Root: 254.6075411294803

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) = (3 + 2·n + 6·n² + 4·n³)/3. A166464

Gaps of 2 in sequence A038593 (lower terms). A38643

Number of 4 X n 0..1 arrays with every element equal to 1, 2 or 4 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero. A302281

Numbers k such that 405·2^k+1 is prime. A323102

Numbers which are the sums of three positive triangular numbers in exactly two different ways. A64825

G.f. A(x) satisfies: the sum of the coefficients of x^k, k=0..n, in A(x)ⁿ equals 2^n² for n>=0. A232689