165025099 has 12 divisors (see below), whose sum is σ = 170370000. Its totient is φ = 159838224.

The previous prime is 165025073. The next prime is 165025111. The reversal of 165025099 is 990520561.

165025099 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 165025099 - 2⁷ = 165024971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (165025009) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 275202 + ... + 275800.

It is an arithmetic number, because the mean of its divisors is an integer number (14197500).

Almost surely, 2^165025099 is an apocalyptic number.

165025099 is a deficient number, since it is larger than the sum of its proper divisors (5344901).

165025099 is an equidigital number, since it uses as much as digits as its factorization.

165025099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 834 (or 791 counting only the distinct ones).

The product of its (nonzero) digits is 24300, while the sum is 37.

The square root of 165025099 is about 12846.2095187647. The cubic root of 165025099 is about 548.5084645726.

The spelling of 165025099 in words is "one hundred sixty-five million, twenty-five thousand, ninety-nine".