165064525 has 12 divisors (see below), whose sum is σ = 208543572. Its totient is φ = 129559040.

The previous prime is 165064499. The next prime is 165064531. The reversal of 165064525 is 525460561.

It can be written as a sum of positive squares in 6 ways, for example, as 3189796 + 161874729 = 1786^2 + 12723^2 .

It is not a de Polignac number, because 165064525 - 2⁹ = 165064013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 60964 + ... + 63613.

It is an arithmetic number, because the mean of its divisors is an integer number (17378631).

Almost surely, 2^165064525 is an apocalyptic number.

It is an amenable number.

165064525 is a deficient number, since it is larger than the sum of its proper divisors (43479047).

165064525 is a wasteful number, since it uses less digits than its factorization.

165064525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124640 (or 124635 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 34.

The square root of 165064525 is about 12847.7439653816. The cubic root of 165064525 is about 548.5521423180.

The spelling of 165064525 in words is "one hundred sixty-five million, sixty-four thousand, five hundred twenty-five".