25493728108 has 6 divisors (see below), whose sum is σ = 44614024196. Its totient is φ = 12746864052.

The previous prime is 25493728081. The next prime is 25493728111. The reversal of 25493728108 is 80182739452.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3186716010 + ... + 3186716017.

Almost surely, 2^25493728108 is an apocalyptic number.

It is an amenable number.

25493728108 is a deficient number, since it is larger than the sum of its proper divisors (19120296088).

25493728108 is a wasteful number, since it uses less digits than its factorization.

25493728108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6373432031 (or 6373432029 counting only the distinct ones).

The product of its (nonzero) digits is 967680, while the sum is 49.

The spelling of 25493728108 in words is "twenty-five billion, four hundred ninety-three million, seven hundred twenty-eight thousand, one hundred eight".