165318230825 has 24 divisors (see below), whose sum is σ = 225002506656. Its totient is φ = 119493792000.

The previous prime is 165318230813. The next prime is 165318230839. The reversal of 165318230825 is 528032813561.

165318230825 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 165318230825 - 2⁶ = 165318230761 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1799216 + ... + 1888865.

It is an arithmetic number, because the mean of its divisors is an integer number (9375104444).

Almost surely, 2^165318230825 is an apocalyptic number.

It is an amenable number.

165318230825 is a deficient number, since it is larger than the sum of its proper divisors (59684275831).

165318230825 is a wasteful number, since it uses less digits than its factorization.

165318230825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3688265 (or 3688260 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 44.

The spelling of 165318230825 in words is "one hundred sixty-five billion, three hundred eighteen million, two hundred thirty thousand, eight hundred twenty-five".