25188901250 has 50 divisors (see below), whose sum is σ = 47929441263. Its totient is φ = 9925179000.

The previous prime is 25188901223. The next prime is 25188901261. The reversal of 25188901250 is 5210988152.

It can be written as a sum of positive squares in 3 ways, for example, as 5823673969 + 19365227281 = 76313^2 + 139159^2 .

It is a tau number, because it is divible by the number of its divisors (50).

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=112225.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25188901198 and 25188901207.

It is an unprimeable number.

It is a polite number, since it can be written in 24 ways as a sum of consecutive naturals, for example, 375953717 + ... + 375953783.

Almost surely, 2^25188901250 is an apocalyptic number.

25188901250 is a deficient number, since it is larger than the sum of its proper divisors (22740540013).

25188901250 is an frugal number, since it uses more digits than its factorization.

25188901250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290 (or 74 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 41.

The spelling of 25188901250 in words is "twenty-five billion, one hundred eighty-eight million, nine hundred one thousand, two hundred fifty".