25856385 has 16 divisors (see below), whose sum is σ = 41446080. Its totient is φ = 13764800.

The previous prime is 25856353. The next prime is 25856401. The reversal of 25856385 is 58365852.

It is not a de Polignac number, because 25856385 - 2⁵ = 25856353 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9286 + ... + 11744.

It is an arithmetic number, because the mean of its divisors is an integer number (2590380).

Almost surely, 2^25856385 is an apocalyptic number.

It is an amenable number.

25856385 is a deficient number, since it is larger than the sum of its proper divisors (15589695).

25856385 is a wasteful number, since it uses less digits than its factorization.

25856385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3168.

The product of its digits is 288000, while the sum is 42.

The square root of 25856385 is about 5084.9174034590. The cubic root of 25856385 is about 295.7031393431.

The spelling of 25856385 in words is "twenty-five million, eight hundred fifty-six thousand, three hundred eighty-five".