165122125 has 16 divisors (see below), whose sum is σ = 235512576. Its totient is φ = 113226000.

The previous prime is 165122123. The next prime is 165122147. The reversal of 165122125 is 521221561.

165122125 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 165122125 - 2¹ = 165122123 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 165122125.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165122123) 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, 93481 + ... + 95230.

It is an arithmetic number, because the mean of its divisors is an integer number (14719536).

Almost surely, 2^165122125 is an apocalyptic number.

It is an amenable number.

165122125 is a deficient number, since it is larger than the sum of its proper divisors (70390451).

165122125 is an equidigital number, since it uses as much as digits as its factorization.

165122125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188733 (or 188723 counting only the distinct ones).

The product of its digits is 1200, while the sum is 25.

The square root of 165122125 is about 12849.9854085520. The cubic root of 165122125 is about 548.6159414673.

Adding to 165122125 its reverse (521221561), we get a palindrome (686343686).

The spelling of 165122125 in words is "one hundred sixty-five million, one hundred twenty-two thousand, one hundred twenty-five".