165072525 has 12 divisors (see below), whose sum is σ = 272920032. Its totient is φ = 88038640.

The previous prime is 165072521. The next prime is 165072599. The reversal of 165072525 is 525270561.

It is not a de Polignac number, because 165072525 - 2² = 165072521 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165072521) 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, 1100409 + ... + 1100558.

It is an arithmetic number, because the mean of its divisors is an integer number (22743336).

Almost surely, 2^165072525 is an apocalyptic number.

165072525 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

165072525 is a deficient number, since it is larger than the sum of its proper divisors (107847507).

165072525 is a wasteful number, since it uses less digits than its factorization.

165072525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2200980 (or 2200975 counting only the distinct ones).

The product of its (nonzero) digits is 21000, while the sum is 33.

The square root of 165072525 is about 12848.0553003169. The cubic root of 165072525 is about 548.5610041984.

The spelling of 165072525 in words is "one hundred sixty-five million, seventy-two thousand, five hundred twenty-five".