Properties of the Number 25645

Twenty-Five Thousand Six Hundred Forty-Five

Basics

Value: 25644 → 25645 → 25646

Parity: odd

Prime: No

Previous Prime: 25643

Next Prime: 25657

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 5 × 23 × 223

Divisors: 1, 5, 23, 115, 223, 1115, 5129, 25645

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 110010000101101

Octal: 62055

Duodecimal: 12A11

Hexadecimal: 642d

Square: 657666025

Square Root: 160.14056325615942

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

T(n,k) = number of n X k 0..1 arrays with every element equal to 0, 1, 2, 4 or 5 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero. A302820

Numbers m such that each of p=6·m+1, q=6·p+1, r=6·q+1 and s=6·r+1 is prime. A263311

Number of 3Xn 0..1 arrays with every element equal to 0, 1, 2, 4 or 5 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero. A302821

Partial sums of orders of finite perfect groups (A060793). A121513

Exponent of 4 (value of j) in n-th number of form 3ⁱ*4^j. A25645

Number of nX6 0..4 arrays with each element·equal to the number its horizontal and vertical neighbors equal to 1,3,2,4,0 for x=0,1,2,3,4. A196920

Number of nX4 0..1 arrays with every element equal to 1, 2, 3, 4, 5 or 7 king-move adjacent elements, with upper left element zero. A299138