78667925 has 48 divisors (see below), whose sum is σ = 121992192. Its totient is φ = 49075200.

The previous prime is 78667909. The next prime is 78667951. The reversal of 78667925 is 52976687.

It is not a de Polignac number, because 78667925 - 2⁴ = 78667909 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, 91799 + ... + 92651.

It is an arithmetic number, because the mean of its divisors is an integer number (2541504).

Almost surely, 2^78667925 is an apocalyptic number.

It is an amenable number.

78667925 is a deficient number, since it is larger than the sum of its proper divisors (43324267).

78667925 is a wasteful number, since it uses less digits than its factorization.

78667925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 918 (or 913 counting only the distinct ones).

The product of its digits is 1270080, while the sum is 50.

The square root of 78667925 is about 8869.4940667436. The cubic root of 78667925 is about 428.4819827884.

The spelling of 78667925 in words is "seventy-eight million, six hundred sixty-seven thousand, nine hundred twenty-five".