Properties of the Number 25804

Twenty-Five Thousand Eight Hundred Four

Basics

Value: 25803 → 25804 → 25805

Parity: even

Prime: No

Previous Prime: 25801

Next Prime: 25819

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 2 ² × 6451

Divisors: 1, 2, 4, 6451, 12902, 25804

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 110010011001100

Octal: 62314

Duodecimal: 12B24

Hexadecimal: 64cc

Square: 665846416

Square Root: 160.63623501564024

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 rooted trees with n nodes, at most half of which are leaves. A358584

a(n) = 2·a(n-1) - a(n-2) - a(n-4) with a(0) = a(1) = 0, a(2) = 1, a(3) = 2. A14292

McKay-Thompson series of class 12H for the Monster group with a(0) = 4. A187091

Expansion of (1/q) * ((χ(q³) * χ(-q⁶)) / (χ(q) * χ(-q²)))⁴ in powers of q where χ() is a Ramanujan θ function. A193522

McKay-Thompson series of class 12H for Monster. A58486

Numbers k such that (k+3)^k+2 mod (k+1) = k. A64935

G.f.: imaginary part of 1/(1 - i·x - i·x²) where i=sqrt(-1). A201838

McKay-Thompson series of class 12H for the Monster group with a(0) = 5. A187198

Numbers n such that 2·10ⁿ + 7·R_n - 4 is prime, where R_n = 11...1 is the repunit (A002275) of length n. A102958

Sums of least knight's moves from (0,0) to points in the square lattice [-n,n]x[-n,n]. A183047