Properties of the Number 7625

Seven Thousand Six Hundred Twenty-Five

Basics

Value: 7624 → 7625 → 7626

Parity: odd

Prime: No

Previous Prime: 7621

Next Prime: 7639

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 5 ³ × 61

Divisors: 1, 5, 25, 61, 125, 305, 1525, 7625

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1110111001001

Octal: 16711

Duodecimal: 44B5

Hexadecimal: 1dc9

Square: 58140625

Square Root: 87.32124598286491

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

Numbers n that are the hypotenuse of exactly 10 distinct integer-sided right triangles, i.e., n² can be written as a sum of two squares in 10 ways. A97225

Number of partitions of n which represent first player winning Chomp positions with unique winning moves. A112472

T(n,k)=Number of (n+2)X(k+2) 0..3 arrays with every 3X3 subblock row and diagonal sum equal to 0 1 3 6 or 7 and every 3X3 column and antidiagonal sum not equal to 0 1 3 6 or 7. A252305

Numbers n such that n is a substring of its square when both are written in base 2. A18826

Numbers n such that n is a substring of its square (both n and n squared in base 4) (written in base 10). A18828

Sum of prime divisors of n (with repetition) is one less than the sum of prime divisors (with repetition) of n+1. A228126

a(n) = r·a(ceiling(n/2))+s·a(floor(n/2)) with a(1)=1 and (r,s)=(3,2). A268526

Number of ways to write n as an ordered sum of 5 prime powers (including 1). A341134

Numbers k such that σ(k) divides σ(φ(k)). A66831

Numbers n such that σ(φ(n))/σ(n) = 2. A67382