Properties of the Number 25648

Twenty-Five Thousand Six Hundred Forty-Eight

Basics

Value: 25647 → 25648 → 25649

Parity: even

Prime: No

Previous Prime: 25643

Next Prime: 25657

Digit Sum: 25

Digital Root: 7

Palindrome: No

Factorization: 2 ⁴ × 7 × 229

Divisors: 1, 2, 4, 7, 8, 14, 16, 28, 56, 112

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 110010000110000

Octal: 62060

Duodecimal: 12A14

Hexadecimal: 6430

Square: 657819904

Square Root: 160.1499297533408

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

Numbers k such that (7·10^k + 71)/3 is prime. A270831

Number T(n,k) of tilings of a 5 X n rectangle with pentominoes of any shape and exactly k pentominoes of shape Y; triangle T(n,k), n>=0, read by rows. A247712

Number of nonempty subsets of {1..n} whose elements have an even root mean square. A357416

dot_product(n,n-1,...2,1)*(7,8,...,n,1,2,3,4,5,6). A26066

McKay-Thompson series of class 36b for the Monster group. A112173

Spontaneous magnetization coefficients for square lattice spin 2 Ising model. A10103

McKay-Thompson series of class 18e for the Monster group. A58543

Numbers n such that 2·10ⁿ + 7·R_n + 2 is prime, where R_n = 11...1 is the repunit (A002275) of length n. A102959

Number of n X 2 0..3 arrays with no element equal to zero plus the sum of elements to its left or one plus the sum of elements above it or one plus the sum of the elements diagonally to its northwest, modulo 4. A240266

a(n) is the positive integer·such that 3^(M-1/(2·p)) == -2^x (mod M), where p > 2 is prime, M=2^p-1 is the n-th Mersenne prime and x < p. A278792