Properties of the Number 25215

Twenty-Five Thousand Two Hundred Fifteen

Basics

Value: 25214 → 25215 → 25216

Parity: odd

Prime: No

Previous Prime: 25189

Next Prime: 25219

Digit Sum: 15

Digital Root: 6

Palindrome: No

Factorization: 3 × 5 × 41 ²

Divisors: 1, 3, 5, 15, 41, 123, 205, 615, 1681, 5043

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 110001001111111

Octal: 61177

Duodecimal: 12713

Hexadecimal: 627f

Square: 635796225

Square Root: 158.79231719450408

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

Numbers k such that 3^k + 14 is prime. A219035

Triangle of 3-Eulerian numbers. A144697

a(2·n+1) = 7·a(n), a(2·n+2) = 8·a(n) + a(n-1). A116554

Starting with a(0) = 1, smallest number k > a(n-1) such that, for all a(m) with m < n, k + a(m) is not squarefree. A80793

a(n) = n*(n³ - n + 2)/2. A101374

Number of 2 X 2 matrices with all terms in {-n,..,0,..,n} and (sum of terms) = determinant. A281194

Great rhombicosidodecahedron with faces of centered polygons. A193253

a(n) is the smallest number > 1 whose base n digits yield the original number when added and multiplied left to right; or 0 if no such number exists. A334916

Numbers k such that σ(k) = ψ(k) + 2 * τ(k). A387962

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