Properties of the Number 8425

Eight Thousand Four Hundred Twenty-Five

Basics

Value: 8424 → 8425 → 8426

Parity: odd

Prime: No

Previous Prime: 8423

Next Prime: 8429

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 5 ² × 337

Divisors: 1, 5, 25, 337, 1685, 8425

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10000011101001

Octal: 20351

Duodecimal: 4A61

Hexadecimal: 20e9

Square: 70980625

Square Root: 91.7877987534291

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

Generalized 28-gonal (or icosioctagonal) numbers: m*(13·m - 12) with m = 0, +1, -1, +2, -2, +3, -3, ... A303812

Generalized 30-gonal (or triacontagonal) numbers: m*(14·m - 13) with m = 0, +1, -1, +2, -2, +3, -3, ... A316729

Expansion of 1/((1+3·x)*(1-4·x)). A53404

Centered 24-gonal numbers. A69190

30-gonal numbers: a(n) = n*(14·n-13). A254474

a(n) = 15·n² - 9·n + 1. A134154

Numbers n such that A003313(n) = A003313(2n). A86878

a(n) = n*(n² + 2·n - 1)/2. A127736

Magic constants of 5 X 5 magic squares which consist of consecutive primes. A176571

T(n,k)=Number of (n+2)X(k+2) 0..3 arrays with every 3X3 subblock row and column sum not equal to 0 1 3 6 or 7 and every 3X3 diagonal and antidiagonal sum equal to 0 1 3 6 or 7. A252157