78325115 has 24 divisors (see below), whose sum is σ = 106134000. Its totient is φ = 55408320.

The previous prime is 78325109. The next prime is 78325153. The reversal of 78325115 is 51152387.

It is not a de Polignac number, because 78325115 - 2²⁰ = 77276539 is a prime.

It is a super-2 number, since 2×78325115² = 12269647279526450, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20636 + ... + 24134.

It is an arithmetic number, because the mean of its divisors is an integer number (4422250).

Almost surely, 2^78325115 is an apocalyptic number.

78325115 is a deficient number, since it is larger than the sum of its proper divisors (27808885).

78325115 is a wasteful number, since it uses less digits than its factorization.

78325115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3563 (or 3552 counting only the distinct ones).

The product of its digits is 8400, while the sum is 32.

The square root of 78325115 is about 8850.1477388798. The cubic root of 78325115 is about 427.8586800879.

The spelling of 78325115 in words is "seventy-eight million, three hundred twenty-five thousand, one hundred fifteen".