78316325 has 6 divisors (see below), whose sum is σ = 97112274. Its totient is φ = 62653040.

The previous prime is 78316321. The next prime is 78316333. The reversal of 78316325 is 52361387.

It can be written as a sum of positive squares in 3 ways, for example, as 7739524 + 70576801 = 2782^2 + 8401^2 .

It is not a de Polignac number, because 78316325 - 2² = 78316321 is a prime.

It is a super-2 number, since 2×78316325² = 12266893523011250, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78316321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1566302 + ... + 1566351.

It is an arithmetic number, because the mean of its divisors is an integer number (16185379).

Almost surely, 2^78316325 is an apocalyptic number.

It is an amenable number.

78316325 is a deficient number, since it is larger than the sum of its proper divisors (18795949).

78316325 is a wasteful number, since it uses less digits than its factorization.

78316325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3132663 (or 3132658 counting only the distinct ones).

The product of its digits is 30240, while the sum is 35.

The square root of 78316325 is about 8849.6511230669. The cubic root of 78316325 is about 427.8426740746.

The spelling of 78316325 in words is "seventy-eight million, three hundred sixteen thousand, three hundred twenty-five".