25585256 has 16 divisors (see below), whose sum is σ = 48580800. Its totient is φ = 12630384.

The previous prime is 25585253. The next prime is 25585297. The reversal of 25585256 is 65258552.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (25585253) 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 3 ways as a sum of consecutive naturals, for example, 19610 + ... + 20873.

It is an arithmetic number, because the mean of its divisors is an integer number (3036300).

Almost surely, 2^25585256 is an apocalyptic number.

It is an amenable number.

25585256 is a deficient number, since it is larger than the sum of its proper divisors (22995544).

25585256 is a wasteful number, since it uses less digits than its factorization.

25585256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40568 (or 40564 counting only the distinct ones).

The product of its digits is 120000, while the sum is 38.

The square root of 25585256 is about 5058.1870269890. The cubic root of 25585256 is about 294.6659284417.

The spelling of 25585256 in words is "twenty-five million, five hundred eighty-five thousand, two hundred fifty-six".