25520516156 has 6 divisors (see below), whose sum is σ = 44660903280. Its totient is φ = 12760258076.

The previous prime is 25520516141. The next prime is 25520516207. The reversal of 25520516156 is 65161502552.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3190064516 + ... + 3190064523.

It is an arithmetic number, because the mean of its divisors is an integer number (7443483880).

Almost surely, 2^25520516156 is an apocalyptic number.

It is an amenable number.

25520516156 is a deficient number, since it is larger than the sum of its proper divisors (19140387124).

25520516156 is a wasteful number, since it uses less digits than its factorization.

25520516156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6380129043 (or 6380129041 counting only the distinct ones).

The product of its (nonzero) digits is 90000, while the sum is 38.

The spelling of 25520516156 in words is "twenty-five billion, five hundred twenty million, five hundred sixteen thousand, one hundred fifty-six".