25157978314250 has 32 divisors (see below), whose sum is σ = 47096767448640. Its totient is φ = 10062970803600.

The previous prime is 25157978314213. The next prime is 25157978314439. The reversal of 25157978314250 is 5241387975152.

It is a self number, because there is not a number n which added to its sum of digits gives 25157978314250.

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, 10575449 + ... + 12734051.

It is an arithmetic number, because the mean of its divisors is an integer number (1471773982770).

Almost surely, 2^{25157978314250} is an apocalyptic number.

25157978314250 is a deficient number, since it is larger than the sum of its proper divisors (21938789134390).

25157978314250 is a wasteful number, since it uses less digits than its factorization.

25157978314250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2205239 (or 2205229 counting only the distinct ones).

The product of its (nonzero) digits is 21168000, while the sum is 59.

The spelling of 25157978314250 in words is "twenty-five trillion, one hundred fifty-seven billion, nine hundred seventy-eight million, three hundred fourteen thousand, two hundred fifty".