25391595712 has 28 divisors (see below), whose sum is σ = 57584512720. Its totient is φ = 10882112256.

The previous prime is 25391595629. The next prime is 25391595737. The reversal of 25391595712 is 21759519352.

It is a tau number, because it is divible by the number of its divisors (28).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28338387 + ... + 28339282.

It is an arithmetic number, because the mean of its divisors is an integer number (2056589740).

Almost surely, 2^25391595712 is an apocalyptic number.

It is an amenable number.

25391595712 is an abundant number, since it is smaller than the sum of its proper divisors (32192917008).

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

25391595712 is an equidigital number, since it uses as much as digits as its factorization.

25391595712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56677688 (or 56677678 counting only the distinct ones).

The product of its digits is 850500, while the sum is 49.

The spelling of 25391595712 in words is "twenty-five billion, three hundred ninety-one million, five hundred ninety-five thousand, seven hundred twelve".