166725326 has 4 divisors (see below), whose sum is σ = 250087992. Its totient is φ = 83362662.

The previous prime is 166725289. The next prime is 166725353. The reversal of 166725326 is 623527661.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 623527661 = 67 ⋅9306383.

It is a self number, because there is not a number n which added to its sum of digits gives 166725326.

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 as a sum of consecutive naturals, namely, 41681330 + ... + 41681333.

It is an arithmetic number, because the mean of its divisors is an integer number (62521998).

Almost surely, 2^166725326 is an apocalyptic number.

166725326 is a deficient number, since it is larger than the sum of its proper divisors (83362666).

166725326 is an equidigital number, since it uses as much as digits as its factorization.

166725326 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83362665.

The product of its digits is 90720, while the sum is 38.

The square root of 166725326 is about 12912.2161537050. The cubic root of 166725326 is about 550.3857635265.

The spelling of 166725326 in words is "one hundred sixty-six million, seven hundred twenty-five thousand, three hundred twenty-six".