Properties of the Number 7425

Seven Thousand Four Hundred Twenty-Five

Basics

Value: 7424 → 7425 → 7426

Parity: odd

Prime: No

Previous Prime: 7417

Next Prime: 7433

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 3 ³ × 5 ² × 11

Divisors: 1, 3, 5, 9, 11, 15, 25, 27, 33, 45

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1110100000001

Octal: 16401

Duodecimal: 4369

Hexadecimal: 1d01

Square: 55130625

Square Root: 86.16843969807043

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

Odd abundant numbers (odd numbers m whose sum of divisors exceeds 2m). A5231

Pentanacci numbers: a(n) = a(n-1) + a(n-2) + a(n-3) + a(n-4) + a(n-5) with a(0) = a(1) = a(2) = a(3) = a(4) = 1. A322

Odd primitive abundant numbers. A6038

Number triangle T(n,k) = C(n,n-k)*C(n+1,n-k). A103371

T(n,k)=Number of (n+2)X(k+2) 0..3 arrays with every 3X3 subblock row and diagonal sum equal to 2 3 4 6 or 7 and every 3X3 column and antidiagonal sum not equal to 2 3 4 6 or 7. A252407

16-gonal (or hexadecagonal) numbers: a(n) = n*(7·n-6). A51868

Numbers k for which nontrivial positive magic squares of exactly 9 different orders with magic sum k exist. For a definition of nontrivial positive magic squares, see A125005. A125016

Odd numbers whose abundancy is closer to 2 than any smaller odd number. A171929

Triangle read by rows, the inverse Bell transform of n!*binomial(5,n) (without column 0). A13988

T(n,k)=Number of nXk 0..1 arrays with every element equal to 0, 1, 3, 5 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero. A303197