78425956 has 12 divisors (see below), whose sum is σ = 156851968. Its totient is φ = 33611112.

The previous prime is 78425933. The next prime is 78425987. The reversal of 78425956 is 65952487.

78425956 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1400436 + ... + 1400491.

Almost surely, 2^78425956 is an apocalyptic number.

It is an amenable number.

78425956 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

78425956 is a wasteful number, since it uses less digits than its factorization.

78425956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2800938 (or 2800936 counting only the distinct ones).

The product of its digits is 604800, while the sum is 46.

The square root of 78425956 is about 8855.8430428729. The cubic root of 78425956 is about 428.0422193191.

The spelling of 78425956 in words is "seventy-eight million, four hundred twenty-five thousand, nine hundred fifty-six".