78325305 has 16 divisors (see below), whose sum is σ = 125483904. Its totient is φ = 41719040.

The previous prime is 78325297. The next prime is 78325339. The reversal of 78325305 is 50352387.

It is not a de Polignac number, because 78325305 - 2³ = 78325297 is a prime.

It is a super-2 number, since 2×78325305² = 12269706806686050, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10252 + ... + 16178.

It is an arithmetic number, because the mean of its divisors is an integer number (7842744).

Almost surely, 2^78325305 is an apocalyptic number.

It is an amenable number.

78325305 is a deficient number, since it is larger than the sum of its proper divisors (47158599).

78325305 is a wasteful number, since it uses less digits than its factorization.

78325305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6816.

The product of its (nonzero) digits is 25200, while the sum is 33.

The square root of 78325305 is about 8850.1584731574. The cubic root of 78325305 is about 427.8590260522.

The spelling of 78325305 in words is "seventy-eight million, three hundred twenty-five thousand, three hundred five".