Properties of the Number 25415

Twenty-Five Thousand Four Hundred Fifteen

Basics

Value: 25414 → 25415 → 25416

Parity: odd

Prime: No

Previous Prime: 25411

Next Prime: 25423

Digit Sum: 17

Digital Root: 8

Palindrome: No

Factorization: 5 × 13 × 17 × 23

Divisors: 1, 5, 13, 17, 23, 65, 85, 115, 221, 299

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 110001101000111

Octal: 61507

Duodecimal: 1285B

Hexadecimal: 6347

Square: 645922225

Square Root: 159.42082674481398

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 binary necklaces of length n with no subsequence 00, excluding the necklace "0". A358

Sum of consecutive nonsquares. A48395

Sum of the n-th maximal run of adjacent (increasing by one at a time) non-perfect-powers. A375705

Number of Dyck n-paths with ascents and descents of length equal to 1 (mod 4). A23427

T(n,k) = 5·A046802(n,k) - 4·A007318(n,k), triangle read by rows (0 <= k <= n). A168290

Number of (0, 1)-necklaces of length n without zigzags (see reference for precise definition). A263659

Composite squarefree numbers n such that p(i)-9 divides n+9, where p(i) are the prime factors of n. A225709

a(n) = ∑_{1 <= x₁, x₂, x₃ <= n} gcd(x₁, n)/gcd(x₁, x₂, x₃, n). A373060

G.f. satisfies: A(x) = (1 + x·A(x)) * (1 + x⁴*A(x)). A216116

Least sum of 3 distinct nonzero squares in exactly n ways. A25415