25250556 has 12 divisors (see below), whose sum is σ = 58917992. Its totient is φ = 8416848.

The previous prime is 25250543. The next prime is 25250579. The reversal of 25250556 is 65505252.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1052095 + ... + 1052118.

Almost surely, 2^25250556 is an apocalyptic number.

It is an amenable number.

25250556 is an abundant number, since it is smaller than the sum of its proper divisors (33667436).

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

25250556 is a wasteful number, since it uses less digits than its factorization.

25250556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2104220 (or 2104218 counting only the distinct ones).

The product of its (nonzero) digits is 15000, while the sum is 30.

The square root of 25250556 is about 5024.9931343237. The cubic root of 25250556 is about 293.3753687464.

The spelling of 25250556 in words is "twenty-five million, two hundred fifty thousand, five hundred fifty-six".