79315381825 has 12 divisors (see below), whose sum is σ = 99596026240. Its totient is φ = 62649110160.

The previous prime is 79315381807. The next prime is 79315381829. The reversal of 79315381825 is 52818351397.

It is not a de Polignac number, because 79315381825 - 2⁷ = 79315381697 is a prime.

It is not an unprimeable number, because it can be changed into a prime (79315381829) by changing a digit.

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 in 11 ways as a sum of consecutive naturals, for example, 20077869 + ... + 20081818.

Almost surely, 2^79315381825 is an apocalyptic number.

It is an amenable number.

79315381825 is a deficient number, since it is larger than the sum of its proper divisors (20280644415).

79315381825 is a wasteful number, since it uses less digits than its factorization.

79315381825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40159776 (or 40159771 counting only the distinct ones).

The product of its digits is 1814400, while the sum is 52.

The spelling of 79315381825 in words is "seventy-nine billion, three hundred fifteen million, three hundred eighty-one thousand, eight hundred twenty-five".