Properties of the Number 25224

Twenty-Five Thousand Two Hundred Twenty-Four

Basics

Value: 25223 → 25224 → 25225

Parity: even

Prime: No

Previous Prime: 25219

Next Prime: 25229

Digit Sum: 15

Digital Root: 6

Palindrome: No

Factorization: 2 ³ × 3 × 1051

Divisors: 1, 2, 3, 4, 6, 8, 12, 24, 1051, 2102

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 110001010001000

Octal: 61210

Duodecimal: 12720

Hexadecimal: 6288

Square: 636250176

Square Root: 158.82065356873457

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 primes less than 10000n. A38813

a(n) = 5·a(n-1) + 4·a(n-2) with a(0)=1, a(1)=4. A122690

Expansion of g.f.: 1/((1 - x - x² + x⁴ - x⁶)*(1 - x² + x⁴ + x⁵ - x⁶)). A147606

Triangle read by rows: T(n,k) = number of permutations p of 1,...,n, with min(|p(i)-p(i-1)|, i=2..n) = k (n>=2, k>=1). A129534

Records in A361902. A361997

Numbers k such that 3^k + 100 is prime. A219618

Equal count of primes congruent to 1 mod 4 and 3 mod 4 associated with primes in A007351 (the zero beginning the sequence indicates the prime 2). A92198

Expansion of x/(1 - 5·x - 4·x²). A15537

a(n) = floor(∑_k=1..n sqrt(k)). A25224

T(n,k)=Number of nXk 0..2 arrays with no element equal to zero plus the sum of elements to its left or zero plus the sum of the elements above it or zero plus the sum of the elements diagonally to its northwest, modulo 3. A240039