25115660012 has 6 divisors (see below), whose sum is σ = 43952405028. Its totient is φ = 12557830004.

The previous prime is 25115659973. The next prime is 25115660033. The reversal of 25115660012 is 21006651152.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3139457498 + ... + 3139457505.

It is an arithmetic number, because the mean of its divisors is an integer number (7325400838).

Almost surely, 2^25115660012 is an apocalyptic number.

It is an amenable number.

25115660012 is a deficient number, since it is larger than the sum of its proper divisors (18836745016).

25115660012 is a wasteful number, since it uses less digits than its factorization.

25115660012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6278915007 (or 6278915005 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 29.

The spelling of 25115660012 in words is "twenty-five billion, one hundred fifteen million, six hundred sixty thousand, twelve".