25585056 has 180 divisors, whose sum is σ = 87172722. Its totient is φ = 7112448.

The previous prime is 25585033. The next prime is 25585067. The reversal of 25585056 is 65058552.

25585056 is a `hidden beast` number, since 2 + 558 + 50 + 56 = 666.

It can be written as a sum of positive squares in only one way, i.e., 16941456 + 8643600 = 4116^2 + 2940^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 25585056.

It is an unprimeable number.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 691470 + ... + 691506.

Almost surely, 2^25585056 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25585056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43586361).

25585056 is an abundant number, since it is smaller than the sum of its proper divisors (61587666).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25585056 is an equidigital number, since it uses as much as digits as its factorization.

25585056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81 (or 49 counting only the distinct ones).

The product of its (nonzero) digits is 60000, while the sum is 36.

The square root of 25585056 is about 5058.1672570211. The cubic root of 25585056 is about 294.6651606383.

The spelling of 25585056 in words is "twenty-five million, five hundred eighty-five thousand, fifty-six".