25609056 has 48 divisors (see below), whose sum is σ = 73338048. Its totient is φ = 7760000.

The previous prime is 25609039. The next prime is 25609141. The reversal of 25609056 is 65090652.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×25609056² = 1311647498422272, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11070 + ... + 13181.

It is an arithmetic number, because the mean of its divisors is an integer number (1527876).

Almost surely, 2^25609056 is an apocalyptic number.

It is an amenable number.

25609056 is an abundant number, since it is smaller than the sum of its proper divisors (47728992).

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

25609056 is a wasteful number, since it uses less digits than its factorization.

25609056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24275 (or 24267 counting only the distinct ones).

The product of its (nonzero) digits is 16200, while the sum is 33.

The square root of 25609056 is about 5060.5391017163. The cubic root of 25609056 is about 294.7572684913.

The spelling of 25609056 in words is "twenty-five million, six hundred nine thousand, fifty-six".