78571825 has 12 divisors (see below), whose sum is σ = 100572928. Its totient is φ = 60829200.

The previous prime is 78571819. The next prime is 78571847. The reversal of 78571825 is 52817587.

It is not a de Polignac number, because 78571825 - 2⁷ = 78571697 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 49917 + ... + 51466.

Almost surely, 2^78571825 is an apocalyptic number.

It is an amenable number.

78571825 is a deficient number, since it is larger than the sum of its proper divisors (22001103).

78571825 is a wasteful number, since it uses less digits than its factorization.

78571825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101424 (or 101419 counting only the distinct ones).

The product of its digits is 156800, while the sum is 43.

The square root of 78571825 is about 8864.0749658382. The cubic root of 78571825 is about 428.3074351688.

The spelling of 78571825 in words is "seventy-eight million, five hundred seventy-one thousand, eight hundred twenty-five".