165123500925 has 48 divisors (see below), whose sum is σ = 297282312000. Its totient is φ = 80553876480.

The previous prime is 165123500897. The next prime is 165123500929. The reversal of 165123500925 is 529005321561.

165123500925 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 165123500925 - 2⁷ = 165123500797 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165123500929) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 1956540 + ... + 2039189.

It is an arithmetic number, because the mean of its divisors is an integer number (6193381500).

Almost surely, 2^165123500925 is an apocalyptic number.

165123500925 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

165123500925 is a deficient number, since it is larger than the sum of its proper divisors (132158811075).

165123500925 is a wasteful number, since it uses less digits than its factorization.

165123500925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3995790 (or 3995785 counting only the distinct ones).

The product of its (nonzero) digits is 81000, while the sum is 39.

The spelling of 165123500925 in words is "one hundred sixty-five billion, one hundred twenty-three million, five hundred thousand, nine hundred twenty-five".