166325459 has 2 divisors, whose sum is σ = 166325460. Its totient is φ = 166325458.

The previous prime is 166325441. The next prime is 166325473. The reversal of 166325459 is 954523661.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-166325459 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is equal to p_9308885 and since 166325459 and 9308885 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (166325359) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83162729 + 83162730.

It is an arithmetic number, because the mean of its divisors is an integer number (83162730).

Almost surely, 2^166325459 is an apocalyptic number.

166325459 is a deficient number, since it is larger than the sum of its proper divisors (1).

166325459 is an equidigital number, since it uses as much as digits as its factorization.

166325459 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 194400, while the sum is 41.

The square root of 166325459 is about 12896.7228007738. The cubic root of 166325459 is about 549.9454039471.

The spelling of 166325459 in words is "one hundred sixty-six million, three hundred twenty-five thousand, four hundred fifty-nine".