78599625 has 64 divisors (see below), whose sum is σ = 147184128. Its totient is φ = 36960000.

The previous prime is 78599617. The next prime is 78599629. The reversal of 78599625 is 52699587.

It is a happy number.

It is not a de Polignac number, because 78599625 - 2³ = 78599617 is a prime.

It is not an unprimeable number, because it can be changed into a prime (78599629) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 111775 + ... + 112475.

It is an arithmetic number, because the mean of its divisors is an integer number (2299752).

Almost surely, 2^78599625 is an apocalyptic number.

78599625 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

78599625 is a deficient number, since it is larger than the sum of its proper divisors (68584503).

78599625 is a wasteful number, since it uses less digits than its factorization.

78599625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 755 (or 745 counting only the distinct ones).

The product of its digits is 1360800, while the sum is 51.

The square root of 78599625 is about 8865.6429546875. The cubic root of 78599625 is about 428.3579432769.

The spelling of 78599625 in words is "seventy-eight million, five hundred ninety-nine thousand, six hundred twenty-five".