Properties of the Number 25195

Twenty-Five Thousand One Hundred Ninety-Five

Basics

Value: 25194 → 25195 → 25196

Parity: odd

Prime: No

Previous Prime: 25189

Next Prime: 25219

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 5 × 5039

Divisors: 1, 5, 5039, 25195

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 110001001101011

Octal: 61153

Duodecimal: 126B7

Hexadecimal: 626b

Square: 634788025

Square Root: 158.72932936291264

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 T(n,k) of entries in the k-th blocks of all set partitions of [n] when blocks are ordered by increasing lengths (and increasing smallest elements); triangle T(n,k), n>=1, 1<=k<=n, read by rows. A319298

Total sum of minimum block sizes in all partitions of n-set. A97147

Row sums of triangle A137712. A137713

Row sums of A138060. A138289

Integers n such that 6n, 36n, and 216n fall between pairs of twin primes, that is, 6n-1, 6n+1, 36n-1, 36n+1, 216n-1, and 216n+1 are prime. A192851

Numbers n such that n divides the (right) concatenation of all numbers <= n written in base 11 (most significant digit on right). A29504

Number of n X 2 binary arrays indicating whether each 2 X 2 subblock of a larger binary array has lexicographically nondecreasing rows and columns, for some larger (n+1) X 3 binary array with rows and columns of the latter in lexicographically nondecreasing order. A227252

Linear recurrence a(n) = a(n-3) + 2a(n-5), starting from all-one initial conditions. A133683

[ 4th elementary symmetric function of {sqrt(k)} ], k = 1,2,...,n. A25195