Properties of the Number 25844

Twenty-Five Thousand Eight Hundred Forty-Four

Basics

Value: 25843 → 25844 → 25845

Parity: even

Prime: No

Previous Prime: 25841

Next Prime: 25847

Digit Sum: 23

Digital Root: 5

Palindrome: No

Factorization: 2 ² × 7 × 13 × 71

Divisors: 1, 2, 4, 7, 13, 14, 26, 28, 52, 71

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 110010011110100

Octal: 62364

Duodecimal: 12B58

Hexadecimal: 64f4

Square: 667912336

Square Root: 160.76069171286866

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

G.f.: ∏_{n >= 0} (1+x²ⁿ⁺¹)/(1-x²ⁿ⁺¹). A80054

Number of 4-line partitions of n (i.e., planar partitions of n with at most 4 lines). A2799

Larger of amicable pair m < n defined by t(n) = m and t(m) = n where t(n) = ψ(n) - n and ψ(n) = A001615(n) is the Dedekind ψ function. A323330

Expansion of theta₃(q) / theta₃(q²) in powers of q. A80015

Expansion of f(-q) / f(q) in powers of q where f() is a Ramanujan θ function. A108494

Number of parts, counted without multiplicity, in all compositions of n. A336875

Composite numbers k such that σ(k)*(φ(k) + 2) is a square. A65655

Expansion of φ(-q) / φ(q²) in powers of q where φ() is a Ramanujan θ function. A210030

Numbers k such that usigma(k) = φ(k)*ω(k), where ω(k) is the number of distinct prime divisors of k. A63795

Records in A071786. A151766