78370788325 has 12 divisors (see below), whose sum is σ = 97359424228. Its totient is φ = 62580729600.

The previous prime is 78370788283. The next prime is 78370788337. The reversal of 78370788325 is 52388707387.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 18845523841 + 59525264484 = 137279^2 + 243978^2 .

It is not a de Polignac number, because 78370788325 - 2²¹ = 78368691173 is a prime.

It is a super-2 number, since 2×78370788325² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 78370788325.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2883732 + ... + 2910781.

Almost surely, 2^78370788325 is an apocalyptic number.

It is an amenable number.

78370788325 is a deficient number, since it is larger than the sum of its proper divisors (18988635903).

78370788325 is a wasteful number, since it uses less digits than its factorization.

78370788325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5795064 (or 5795059 counting only the distinct ones).

The product of its (nonzero) digits is 15805440, while the sum is 58.

The spelling of 78370788325 in words is "seventy-eight billion, three hundred seventy million, seven hundred eighty-eight thousand, three hundred twenty-five".