78256075 has 6 divisors (see below), whose sum is σ = 97037564. Its totient is φ = 62604840.

The previous prime is 78256069. The next prime is 78256093. The reversal of 78256075 is 57065287.

It is not a de Polignac number, because 78256075 - 2⁵ = 78256043 is a prime.

It is a super-2 number, since 2×78256075² = 12248026548811250, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1565097 + ... + 1565146.

Almost surely, 2^78256075 is an apocalyptic number.

78256075 is a deficient number, since it is larger than the sum of its proper divisors (18781489).

78256075 is a wasteful number, since it uses less digits than its factorization.

78256075 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3130253 (or 3130248 counting only the distinct ones).

The product of its (nonzero) digits is 117600, while the sum is 40.

The square root of 78256075 is about 8846.2463791147. The cubic root of 78256075 is about 427.7329305258.

The spelling of 78256075 in words is "seventy-eight million, two hundred fifty-six thousand, seventy-five".