Properties of the Number -664225

Six Hundred Sixty-Four Thousand Two Hundred Twenty-Five

Basics

Value: -664226 → -664225 → -664224

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 25

Digital Root: 7

Palindrome: No

Factorization: 5 ² × 163 ²

Divisors: 1, 5, 25, 163, 815, 4075, 26569, 132845, 664225

Polygonal

Triangular: No

Square: Yes

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -10100010001010100001

Octal: -2421241

Duodecimal: -280481

Hexadecimal: -a22a1

Square: 441194850625

Square Root: 815

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

Squares that are the sum of 3 consecutive primes. A80665

Number of total dominating sets in the n-Moebius ladder. A295420

Numbers k having exactly one divisor d such that in binary representation d and k/d have the same number of 1's as k. A80026

Constant term of the reduction by x² -> x+1 of the polynomial p(n,x) defined at Comments. A192962

Squares the sum of the squares of whose digits are squares. A61090

Squares not divisible by 10 with digits d₁, d₂, ... d_k such that d₁² + ... + d_k² is a square. A254959