78238325 has 24 divisors (see below), whose sum is σ = 106305696. Its totient is φ = 56648000.

The previous prime is 78238319. The next prime is 78238339. The reversal of 78238325 is 52383287.

It is not a de Polignac number, because 78238325 - 2¹⁰ = 78237301 is a prime.

It is a super-2 number, since 2×78238325² = 12242470997611250, which contains 22 as substring.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

Its product of digits (80640) is a multiple of the sum of its prime divisors (1280).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 80090 + ... + 81060.

It is an arithmetic number, because the mean of its divisors is an integer number (4429404).

Almost surely, 2^78238325 is an apocalyptic number.

It is an amenable number.

78238325 is a deficient number, since it is larger than the sum of its proper divisors (28067371).

78238325 is a wasteful number, since it uses less digits than its factorization.

78238325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1285 (or 1280 counting only the distinct ones).

The product of its digits is 80640, while the sum is 38.

The square root of 78238325 is about 8845.2430718438. The cubic root of 78238325 is about 427.7005886976.

The spelling of 78238325 in words is "seventy-eight million, two hundred thirty-eight thousand, three hundred twenty-five".