78325518 has 16 divisors (see below), whose sum is σ = 158412240. Its totient is φ = 25814976.

The previous prime is 78325517. The next prime is 78325519. The reversal of 78325518 is 81552387.

It is an interprime number because it is at equal distance from previous prime (78325517) and next prime (78325519).

It is a super-2 number, since 2×78325518² = 12269773539936648, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78325517) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 72805 + ... + 73872.

It is an arithmetic number, because the mean of its divisors is an integer number (9900765).

Almost surely, 2^78325518 is an apocalyptic number.

78325518 is an abundant number, since it is smaller than the sum of its proper divisors (80086722).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

78325518 is a wasteful number, since it uses less digits than its factorization.

78325518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146771.

The product of its digits is 67200, while the sum is 39.

The square root of 78325518 is about 8850.1705068321. The cubic root of 78325518 is about 427.8594138957.

The spelling of 78325518 in words is "seventy-eight million, three hundred twenty-five thousand, five hundred eighteen".