Properties of the Number 22425

Twenty-Two Thousand Four Hundred Twenty-Five

Basics

Value: 22424 → 22425 → 22426

Parity: odd

Prime: No

Previous Prime: 22409

Next Prime: 22433

Digit Sum: 15

Digital Root: 6

Palindrome: No

Factorization: 3 × 5 ² × 13 × 23

Divisors: 1, 3, 5, 13, 15, 23, 25, 39, 65, 69

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 101011110011001

Octal: 53631

Duodecimal: 10B89

Hexadecimal: 5799

Square: 502880625

Square Root: 149.74979131871936

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

Number of proper divisors of n-th even perfect number. A133033

Expansion of (-1 + ∏_k>=1 1 / (1 + (-x)^k))⁵. A341244

Let p = n-th prime == 7 mod 8; a(n) = sum of quadratic residues mod p that are < p/2. A282039

a(n) = ((n + 1) - 9*(n + 1)² + 8*(n + 1)³)/6. A331987

a(n) is the smallest m such that p = n-th popular prime = A385503(n) is uniquely popular on the interval [2,m] or -1 if p is never uniquely popular. A289662

a(n) = floor(n*(n-1)*(n-2)*(n-3)/16). A11926

Larger members of primitive φ-amicable pairs. A121249

Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 491", based on the 5-celled von Neumann neighborhood. A272541

Numbers k such that k=(a+b)*c=a·b+c for more than one triple (a,b,c) with 1<c<a<=b. A329169

Number of compositions (ordered partitions) of n into distinct nonprime parts. A331917