78492923325 has 36 divisors (see below), whose sum is σ = 142515461140. Its totient is φ = 41289419520.

The previous prime is 78492923317. The next prime is 78492923339. The reversal of 78492923325 is 52332929487.

It can be written as a sum of positive squares in 6 ways, for example, as 8274813156 + 70218110169 = 90966^2 + 264987^2 .

It is not a de Polignac number, because 78492923325 - 2³ = 78492923317 is a prime.

It is a super-2 number, since 2×78492923325² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 2373010 + ... + 2405859.

Almost surely, 2^78492923325 is an apocalyptic number.

78492923325 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

78492923325 is a deficient number, since it is larger than the sum of its proper divisors (64022537815).

78492923325 is a wasteful number, since it uses less digits than its factorization.

78492923325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4778958 (or 4778950 counting only the distinct ones).

The product of its digits is 6531840, while the sum is 54.

The spelling of 78492923325 in words is "seventy-eight billion, four hundred ninety-two million, nine hundred twenty-three thousand, three hundred twenty-five".