166322125 has 8 divisors (see below), whose sum is σ = 207570168. Its totient is φ = 133057600.

The previous prime is 166322113. The next prime is 166322137. The reversal of 166322125 is 521223661.

It is an interprime number because it is at equal distance from previous prime (166322113) and next prime (166322137).

It can be written as a sum of positive squares in 4 ways, for example, as 2149156 + 164172969 = 1466^2 + 12813^2 .

It is a de Polignac number, because none of the positive numbers 2^k-166322125 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 166322093 and 166322102.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 665164 + ... + 665413.

It is an arithmetic number, because the mean of its divisors is an integer number (25946271).

Almost surely, 2^166322125 is an apocalyptic number.

It is an amenable number.

166322125 is a deficient number, since it is larger than the sum of its proper divisors (41248043).

166322125 is an equidigital number, since it uses as much as digits as its factorization.

166322125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1330592 (or 1330582 counting only the distinct ones).

The product of its digits is 4320, while the sum is 28.

The square root of 166322125 is about 12896.5935424824. The cubic root of 166322125 is about 549.9417293638.

Adding to 166322125 its reverse (521223661), we get a palindrome (687545786).

The spelling of 166322125 in words is "one hundred sixty-six million, three hundred twenty-two thousand, one hundred twenty-five".