165355125 has 64 divisors (see below), whose sum is σ = 300029184. Its totient is φ = 80390400.

The previous prime is 165355123. The next prime is 165355133. The reversal of 165355125 is 521553561.

It is not a de Polignac number, because 165355125 - 2¹ = 165355123 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165355123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 521467 + ... + 521783.

It is an arithmetic number, because the mean of its divisors is an integer number (4687956).

Almost surely, 2^165355125 is an apocalyptic number.

165355125 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

165355125 is a deficient number, since it is larger than the sum of its proper divisors (134674059).

165355125 is a wasteful number, since it uses less digits than its factorization.

165355125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 455 (or 445 counting only the distinct ones).

The product of its digits is 22500, while the sum is 33.

The square root of 165355125 is about 12859.0483706999. The cubic root of 165355125 is about 548.8738665973.

The spelling of 165355125 in words is "one hundred sixty-five million, three hundred fifty-five thousand, one hundred twenty-five".