165725322 has 16 divisors (see below), whose sum is σ = 378800832. Its totient is φ = 47350080.

The previous prime is 165725317. The next prime is 165725323. The reversal of 165725322 is 223527561.

It is not an unprimeable number, because it can be changed into a prime (165725323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1972879 + ... + 1972962.

It is an arithmetic number, because the mean of its divisors is an integer number (23675052).

Almost surely, 2^165725322 is an apocalyptic number.

165725322 is an abundant number, since it is smaller than the sum of its proper divisors (213075510).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

165725322 is a wasteful number, since it uses less digits than its factorization.

165725322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3945853.

The product of its digits is 25200, while the sum is 33.

The square root of 165725322 is about 12873.4347398043. The cubic root of 165725322 is about 549.2831675127.

The spelling of 165725322 in words is "one hundred sixty-five million, seven hundred twenty-five thousand, three hundred twenty-two".