25393172016 has 40 divisors (see below), whose sum is σ = 65860409664. Its totient is φ = 8430664000.

The previous prime is 25393171997. The next prime is 25393172047. The reversal of 25393172016 is 61027139352.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1041786 + ... + 1065881.

Almost surely, 2^25393172016 is an apocalyptic number.

It is an amenable number.

25393172016 is an abundant number, since it is smaller than the sum of its proper divisors (40467237648).

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

25393172016 is a wasteful number, since it uses less digits than its factorization.

25393172016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2107929 (or 2107923 counting only the distinct ones).

The product of its (nonzero) digits is 68040, while the sum is 39.

The spelling of 25393172016 in words is "twenty-five billion, three hundred ninety-three million, one hundred seventy-two thousand, sixteen".