25680395 has 12 divisors (see below), whose sum is σ = 33370416. Its totient is φ = 18963360.

The previous prime is 25680379. The next prime is 25680401. The reversal of 25680395 is 59308652.

It is not a de Polignac number, because 25680395 - 2⁴ = 25680379 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14351 + ... + 16040.

It is an arithmetic number, because the mean of its divisors is an integer number (2780868).

Almost surely, 2^25680395 is an apocalyptic number.

25680395 is a deficient number, since it is larger than the sum of its proper divisors (7690021).

25680395 is a wasteful number, since it uses less digits than its factorization.

25680395 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30422 (or 30409 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 38.

The square root of 25680395 is about 5067.5827570944. The cubic root of 25680395 is about 295.0307159437.

The spelling of 25680395 in words is "twenty-five million, six hundred eighty thousand, three hundred ninety-five".