78615325 has 6 divisors (see below), whose sum is σ = 97483034. Its totient is φ = 62892240.

The previous prime is 78615307. The next prime is 78615347. The reversal of 78615325 is 52351687.

It can be written as a sum of positive squares in 3 ways, for example, as 363609 + 78251716 = 603^2 + 8846^2 .

It is not a de Polignac number, because 78615325 - 2⁷ = 78615197 is a prime.

It is a Duffinian number.

It is a congruent 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, 1572282 + ... + 1572331.

Almost surely, 2^78615325 is an apocalyptic number.

It is an amenable number.

78615325 is a deficient number, since it is larger than the sum of its proper divisors (18867709).

78615325 is a wasteful number, since it uses less digits than its factorization.

78615325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3144623 (or 3144618 counting only the distinct ones).

The product of its digits is 50400, while the sum is 37.

The square root of 78615325 is about 8866.5283510515. The cubic root of 78615325 is about 428.3864623781.

The spelling of 78615325 in words is "seventy-eight million, six hundred fifteen thousand, three hundred twenty-five".