78668831725 has 48 divisors (see below), whose sum is σ = 106975028160. Its totient is φ = 56914880000.

The previous prime is 78668831707. The next prime is 78668831737. The reversal of 78668831725 is 52713886687.

It is not a de Polignac number, because 78668831725 - 2¹⁷ = 78668700653 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 53117985 + ... + 53119465.

It is an arithmetic number, because the mean of its divisors is an integer number (2228646420).

Almost surely, 2^78668831725 is an apocalyptic number.

It is an amenable number.

78668831725 is a deficient number, since it is larger than the sum of its proper divisors (28306196435).

78668831725 is a wasteful number, since it uses less digits than its factorization.

78668831725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2382 (or 2377 counting only the distinct ones).

The product of its digits is 27095040, while the sum is 61.

The spelling of 78668831725 in words is "seventy-eight billion, six hundred sixty-eight million, eight hundred thirty-one thousand, seven hundred twenty-five".