165225316 has 9 divisors (see below), whose sum is σ = 289189299. Its totient is φ = 82599804.

The previous prime is 165225301. The next prime is 165225317. The reversal of 165225316 is 613522561.

The square root of 165225316 is 12854.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (165225317) by changing a digit.

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 in 2 ways as a sum of consecutive naturals, for example, 22495 + ... + 28921.

Almost surely, 2^165225316 is an apocalyptic number.

165225316 is the 12854-th square number.

It is an amenable number.

165225316 is a deficient number, since it is larger than the sum of its proper divisors (123963983).

165225316 is an frugal number, since it uses more digits than its factorization.

165225316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12858 (or 6429 counting only the distinct ones).

The product of its digits is 10800, while the sum is 31.

The cubic root of 165225316 is about 548.7302012183.

Adding to 165225316 its reverse (613522561), we get a palindrome (778747877).

The spelling of 165225316 in words is "one hundred sixty-five million, two hundred twenty-five thousand, three hundred sixteen".