Properties of the Number -2225

Two Hundred Twenty-Five

Basics

Value: -2226 → -2225 → -2224

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 11

Digital Root: 2

Palindrome: No

Factorization: 5 ² × 89

Divisors: 1, 5, 25, 89, 445, 2225

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -100010110001

Octal: -4261

Duodecimal: -1355

Hexadecimal: -8b1

Square: 4950625

Square Root: 47.16990566028302

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

Values of n such that L(14) and N(14) are both prime, where L(k) = (n²+n+1)*2^2·k + (2·n+1)*2^k + 1, N(k) = (n²+n+1)*2^k + n. A227517

Number of compositions of n into pairwise relatively prime parts. A101268

a(n)-th and (a(n)+1)-st primes are the first pair of primes that differ by exactly 2n; a(n) = -1 if no such pair of primes exists. A38664

Start with 1; for n>1, replace n with the concatenation of its prime factors in increasing order. A37276

Indices of primes where largest gap occurs. A5669

Triangle [1,1,1,0,0,0,...] δ [1,0,0,0,...] with Deléham δ defined in A084938. A147703

Number of partitions of n such that there is exactly one part which occurs twice, while all other parts occur only once. A90858

Numbers m that are the hypotenuse of exactly 7 distinct integer-sided right triangles, i.e., m² can be written as a sum of two squares in 7 ways. A97101

Powers of cube root of 18 rounded to nearest integer. A18028

Powers of cube root of 18 rounded down. A18027