165222346125 has 16 divisors (see below), whose sum is σ = 274929984576. Its totient is φ = 88118584400.

The previous prime is 165222346123. The next prime is 165222346153. The reversal of 165222346125 is 521643222561.

It is not a de Polignac number, because 165222346125 - 2¹ = 165222346123 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165222346123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 220296087 + ... + 220296836.

It is an arithmetic number, because the mean of its divisors is an integer number (17183124036).

Almost surely, 2^165222346125 is an apocalyptic number.

165222346125 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

165222346125 is a deficient number, since it is larger than the sum of its proper divisors (109707638451).

165222346125 is an equidigital number, since it uses as much as digits as its factorization.

165222346125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 440592941 (or 440592931 counting only the distinct ones).

The product of its digits is 172800, while the sum is 39.

Adding to 165222346125 its reverse (521643222561), we get a palindrome (686865568686).

The spelling of 165222346125 in words is "one hundred sixty-five billion, two hundred twenty-two million, three hundred forty-six thousand, one hundred twenty-five".