168572125 has 8 divisors (see below), whose sum is σ = 210378168. Its totient is φ = 134857600.

The previous prime is 168572101. The next prime is 168572137. The reversal of 168572125 is 521275861.

It can be written as a sum of positive squares in 4 ways, for example, as 143641 + 168428484 = 379^2 + 12978^2 .

It is a de Polignac number, because none of the positive numbers 2^k-168572125 is a prime.

It is a super-2 number, since 2×168572125² = 56833122654031250, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 674164 + ... + 674413.

It is an arithmetic number, because the mean of its divisors is an integer number (26297271).

Almost surely, 2^168572125 is an apocalyptic number.

It is an amenable number.

168572125 is a deficient number, since it is larger than the sum of its proper divisors (41806043).

168572125 is an equidigital number, since it uses as much as digits as its factorization.

168572125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1348592 (or 1348582 counting only the distinct ones).

The product of its digits is 33600, while the sum is 37.

The square root of 168572125 is about 12983.5328397166. The cubic root of 168572125 is about 552.4104944311.

The spelling of 168572125 in words is "one hundred sixty-eight million, five hundred seventy-two thousand, one hundred twenty-five".