78601825 has 12 divisors (see below), whose sum is σ = 97653100. Its totient is φ = 62760960.

The previous prime is 78601819. The next prime is 78601849. The reversal of 78601825 is 52810687.

It can be written as a sum of positive squares in 6 ways, for example, as 31329 + 78570496 = 177^2 + 8864^2 .

It is not a de Polignac number, because 78601825 - 2⁵ = 78601793 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, 11701 + ... + 17149.

Almost surely, 2^78601825 is an apocalyptic number.

It is an amenable number.

78601825 is a deficient number, since it is larger than the sum of its proper divisors (19051275).

78601825 is a wasteful number, since it uses less digits than its factorization.

78601825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6036 (or 6031 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 37.

The square root of 78601825 is about 8865.7670282948. The cubic root of 78601825 is about 428.3619398129.

The spelling of 78601825 in words is "seventy-eight million, six hundred one thousand, eight hundred twenty-five".