166532004364325 has 12 divisors (see below), whose sum is σ = 218646725730660. Its totient is φ = 125388803285760.

The previous prime is 166532004364321. The next prime is 166532004364339. The reversal of 166532004364325 is 523463400235661.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 8502315352129 + 158029689012196 = 2915873^2 + 12570986^2 .

It is not a de Polignac number, because 166532004364325 - 2² = 166532004364321 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166532004364321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 195920004710 + ... + 195920005559.

It is an arithmetic number, because the mean of its divisors is an integer number (18220560477555).

Almost surely, 2^{166532004364325} is an apocalyptic number.

It is an amenable number.

166532004364325 is a deficient number, since it is larger than the sum of its proper divisors (52114721366335).

166532004364325 is a wasteful number, since it uses less digits than its factorization.

166532004364325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 391840010296 (or 391840010291 counting only the distinct ones).

The product of its (nonzero) digits is 9331200, while the sum is 50.

Adding to 166532004364325 its reverse (523463400235661), we get a palindrome (689995404599986).

The spelling of 166532004364325 in words is "one hundred sixty-six trillion, five hundred thirty-two billion, four million, three hundred sixty-four thousand, three hundred twenty-five".