Properties of the Number 25428

Twenty-Five Thousand Four Hundred Twenty-Eight

Basics

Value: 25427 → 25428 → 25429

Parity: even

Prime: No

Previous Prime: 25423

Next Prime: 25439

Digit Sum: 21

Digital Root: 3

Palindrome: No

Factorization: 2 ² × 3 × 13 × 163

Divisors: 1, 2, 3, 4, 6, 12, 13, 26, 39, 52

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

4823 Try Today's Challenge

Representations

Binary: 110001101010100

Octal: 61524

Duodecimal: 12870

Hexadecimal: 6354

Square: 646583184

Square Root: 159.46159412222116

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

Smaller of Smith brothers. A50219

T(n,k) is the number of lower triangles of an n X n 0..k array with all row sums equal to the length of the row and all column sums equal to the length of the column. A195644

McKay-Thompson series of class 6c for Monster. A7262

Every prefix prime in base 9 (written in base 9). A24769

Expansion of (f(x) / f(x³))⁶ in powers of·where f() is a Ramanujan θ function. A132107

Sum of terms in n-th rows of triangle in A077159. A77162

Row sums of A081964. A81966

a(n) = prime(n)*prime(n+1) - prime(n+1). A37167

Least k such that the distance from k² to closest prime = n or zero if no k exists. A79666

Number of lower triangles of an n X n 0..4 array with all row sums equal to the length of the row and all column sums equal to the length of the column. A195640