Properties of the Number 25830

Twenty-Five Thousand Eight Hundred Thirty

Basics

Value: 25829 → 25830 → 25831

Parity: even

Prime: No

Previous Prime: 25819

Next Prime: 25841

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 2 × 3 ² × 5 × 7 × 41

Divisors: 1, 2, 3, 5, 6, 7, 9, 10, 14, 15

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 110010011100110

Octal: 62346

Duodecimal: 12B46

Hexadecimal: 64e6

Square: 667188900

Square Root: 160.7171428317465

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

a(n) = n·A276086(n). A324580

Number of 3-element intersecting families of an n-element set. A51180

This table shows the coefficients of combinatorial formulas needed for generating the sequential sums of p-th powers of tetrahedral numbers. The p-th row (p>=1) contains a(i,p) for i=1 to 3·p-2, where a(i,p) satisfies ∑_i=1..n C(i+2,3)^p = 4·C(n+3,4) * ∑_i=1..3·p-2 a(i,p) * C(n-1,i-1)/(i+3). A87107

Numbers n such that there exists an x≠n that makes {n,n,x} an amicable multiset. A259302

Sum of all the parts in the partitions of n into 6 squarefree parts. A308903

Heinz number of the ω-sequence of n!. A325275

Number of ways to write n as an ordered sum of 9 nonprime numbers. A341486

Triangle read by rows: (1/5) * (A007318⁴ - A007318^-1) as infinite lower triangular matrices. A131050

Numbers that occur in range of A324580. A324541

a(n) = ∑_{k=0..floor(2·n/3)} (k+1) * binomial(k,2·n-3·k). A392267