78425888 has 12 divisors (see below), whose sum is σ = 154401030. Its totient is φ = 39212928.

The previous prime is 78425873. The next prime is 78425909. The reversal of 78425888 is 88852487.

It can be written as a sum of positive squares in only one way, i.e., 51093904 + 27331984 = 7148^2 + 5228^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1225373 + ... + 1225436.

Almost surely, 2^78425888 is an apocalyptic number.

It is an amenable number.

78425888 is a deficient number, since it is larger than the sum of its proper divisors (75975142).

78425888 is a wasteful number, since it uses less digits than its factorization.

78425888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2450819 (or 2450811 counting only the distinct ones).

The product of its digits is 1146880, while the sum is 50.

The square root of 78425888 is about 8855.8392035989. The cubic root of 78425888 is about 428.0420956063.

The spelling of 78425888 in words is "seventy-eight million, four hundred twenty-five thousand, eight hundred eighty-eight".