165099325 has 24 divisors (see below), whose sum is σ = 217486080. Its totient is φ = 123897600.

The previous prime is 165099307. The next prime is 165099329. The reversal of 165099325 is 523990561.

It is a happy number.

It is not a de Polignac number, because 165099325 - 2⁷ = 165099197 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165099329) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 203170 + ... + 203980.

It is an arithmetic number, because the mean of its divisors is an integer number (9061920).

Almost surely, 2^165099325 is an apocalyptic number.

It is an amenable number.

165099325 is a deficient number, since it is larger than the sum of its proper divisors (52386755).

165099325 is a wasteful number, since it uses less digits than its factorization.

165099325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1317 (or 1312 counting only the distinct ones).

The product of its (nonzero) digits is 72900, while the sum is 40.

The square root of 165099325 is about 12849.0982173848. The cubic root of 165099325 is about 548.5906894117.

The spelling of 165099325 in words is "one hundred sixty-five million, ninety-nine thousand, three hundred twenty-five".