Properties of the Number 25520

Twenty-Five Thousand Five Hundred Twenty

Basics

Value: 25519 → 25520 → 25521

Parity: even

Prime: No

Previous Prime: 25471

Next Prime: 25523

Digit Sum: 14

Digital Root: 5

Palindrome: No

Factorization: 2 ⁴ × 5 × 11 × 29

Divisors: 1, 2, 4, 5, 8, 10, 11, 16, 20, 22

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 110001110110000

Octal: 61660

Duodecimal: 12928

Hexadecimal: 63b0

Square: 651270400

Square Root: 159.74980438172688

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

Expansion of ∏_m>=1 ((1+q^2·m-1)/(1+q^2·m))⁵. A29842

Expansion of ∏_k>=1 1/(1 - k·x^k²)^k. A285243

Number of Young tableaux with n cells whose shape is symmetric. A67136

Duplicate of A115461. A152129

Number of ways to select 4 numbers from the set of the first n natural numbers avoiding 3-term arithmetic progressions. A300760

Number of monic irreducible polynomials of degree 3 in GF(3)[x1,...,xn]. A115478

a(n) = 16·n² - 2·n. A158058

Numbers k such that φ(k) + φ(k+1) = k. A67796

Number of monic irreducible polynomials of degree n in GF(3)[x,y]. A115461

Number of walks within N³ (the first octant of Z³) starting at (0,0,0) and consisting of n steps taken from {(-1, 0, 0), (0, -1, 0), (0, 1, -1), (1, 1, 1)}. A149425