25166919250 has 32 divisors (see below), whose sum is σ = 51395430528. Its totient is φ = 9151606000.

The previous prime is 25166919233. The next prime is 25166919301. The reversal of 25166919250 is 5291966152.

It is a self number, because there is not a number n which added to its sum of digits gives 25166919250.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4573054 + ... + 4578553.

It is an arithmetic number, because the mean of its divisors is an integer number (1606107204).

Almost surely, 2^25166919250 is an apocalyptic number.

25166919250 is an abundant number, since it is smaller than the sum of its proper divisors (26228511278).

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

25166919250 is a wasteful number, since it uses less digits than its factorization.

25166919250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9151635 (or 9151625 counting only the distinct ones).

The product of its (nonzero) digits is 291600, while the sum is 46.

The spelling of 25166919250 in words is "twenty-five billion, one hundred sixty-six million, nine hundred nineteen thousand, two hundred fifty".