78252325 has 36 divisors (see below), whose sum is σ = 104160868. Its totient is φ = 58291200.

The previous prime is 78252319. The next prime is 78252329. The reversal of 78252325 is 52325287.

It can be written as a sum of positive squares in 6 ways, for example, as 16016004 + 62236321 = 4002^2 + 7889^2 .

It is a de Polignac number, because none of the positive numbers 2^k-78252325 is a prime.

It is a super-2 number, since 2×78252325² = 12246852735811250, 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 (78252329) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 806677 + ... + 806773.

Almost surely, 2^78252325 is an apocalyptic number.

It is an amenable number.

78252325 is a deficient number, since it is larger than the sum of its proper divisors (25908543).

78252325 is a wasteful number, since it uses less digits than its factorization.

78252325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214 (or 186 counting only the distinct ones).

The product of its digits is 33600, while the sum is 34.

The square root of 78252325 is about 8846.0344222708. The cubic root of 78252325 is about 427.7260981527.

The spelling of 78252325 in words is "seventy-eight million, two hundred fifty-two thousand, three hundred twenty-five".