168725522 has 12 divisors (see below), whose sum is σ = 294408990. Its totient is φ = 72310896.

The previous prime is 168725503. The next prime is 168725581. The reversal of 168725522 is 225527861.

168725522 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 142110241 + 26615281 = 11921^2 + 5159^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 860747 + ... + 860942.

Almost surely, 2^168725522 is an apocalyptic number.

168725522 is a deficient number, since it is larger than the sum of its proper divisors (125683468).

168725522 is a wasteful number, since it uses less digits than its factorization.

168725522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1721705 (or 1721698 counting only the distinct ones).

The product of its digits is 67200, while the sum is 38.

The square root of 168725522 is about 12989.4388639387. The cubic root of 168725522 is about 552.5780041787.

The spelling of 168725522 in words is "one hundred sixty-eight million, seven hundred twenty-five thousand, five hundred twenty-two".