25138875250 has 64 divisors (see below), whose sum is σ = 47659622400. Its totient is φ = 9928027200.

The previous prime is 25138875233. The next prime is 25138875287. The reversal of 25138875250 is 5257883152.

It is a self number, because there is not a number n which added to its sum of digits gives 25138875250.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9860976 + ... + 9863524.

It is an arithmetic number, because the mean of its divisors is an integer number (744681600).

Almost surely, 2^25138875250 is an apocalyptic number.

25138875250 is a deficient number, since it is larger than the sum of its proper divisors (22520747150).

25138875250 is a wasteful number, since it uses less digits than its factorization.

25138875250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3052 (or 3042 counting only the distinct ones).

The product of its (nonzero) digits is 672000, while the sum is 46.

The spelling of 25138875250 in words is "twenty-five billion, one hundred thirty-eight million, eight hundred seventy-five thousand, two hundred fifty".