166717325 has 12 divisors (see below), whose sum is σ = 207623988. Its totient is φ = 132796800.

The previous prime is 166717307. The next prime is 166717337. The reversal of 166717325 is 523717661.

It can be written as a sum of positive squares in 6 ways, for example, as 60668521 + 106048804 = 7789^2 + 10298^2 .

It is not a de Polignac number, because 166717325 - 2⁶ = 166717261 is a prime.

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 (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8486 + ... + 20135.

It is an arithmetic number, because the mean of its divisors is an integer number (17301999).

Almost surely, 2^166717325 is an apocalyptic number.

It is an amenable number.

166717325 is a deficient number, since it is larger than the sum of its proper divisors (40906663).

166717325 is a wasteful number, since it uses less digits than its factorization.

166717325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28864 (or 28859 counting only the distinct ones).

The product of its digits is 52920, while the sum is 38.

The square root of 166717325 is about 12911.9063271076. The cubic root of 166717325 is about 550.3769592114.

The spelling of 166717325 in words is "one hundred sixty-six million, seven hundred seventeen thousand, three hundred twenty-five".