25648131 has 8 divisors (see below), whose sum is σ = 34842960. Its totient is φ = 16776032.

The previous prime is 25648123. The next prime is 25648163. The reversal of 25648131 is 13184652.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 25648131 - 2³ = 25648123 is a prime.

It is a super-2 number, since 2×25648131² = 1315653247586322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (25648171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80496 + ... + 80813.

It is an arithmetic number, because the mean of its divisors is an integer number (4355370).

Almost surely, 2^25648131 is an apocalyptic number.

25648131 is a deficient number, since it is larger than the sum of its proper divisors (9194829).

25648131 is a wasteful number, since it uses less digits than its factorization.

25648131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161365.

The product of its digits is 5760, while the sum is 30.

The square root of 25648131 is about 5064.3983848035. The cubic root of 25648131 is about 294.9071085485.

The spelling of 25648131 in words is "twenty-five million, six hundred forty-eight thousand, one hundred thirty-one".