165012525 has 24 divisors (see below), whose sum is σ = 303135360. Its totient is φ = 88006320.

The previous prime is 165012521. The next prime is 165012541. The reversal of 165012525 is 525210561.

165012525 is a `hidden beast` number, since 1 + 650 + 1 + 2 + 5 + 2 + 5 = 666.

It is not a de Polignac number, because 165012525 - 2² = 165012521 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

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 (165012521) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 121557 + ... + 122906.

It is an arithmetic number, because the mean of its divisors is an integer number (12630640).

Almost surely, 2^165012525 is an apocalyptic number.

165012525 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

165012525 is a deficient number, since it is larger than the sum of its proper divisors (138122835).

165012525 is a wasteful number, since it uses less digits than its factorization.

165012525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244482 (or 244471 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 27.

The square root of 165012525 is about 12845.7201043772. The cubic root of 165012525 is about 548.4945331148.

The spelling of 165012525 in words is "one hundred sixty-five million, twelve thousand, five hundred twenty-five".