165001525 has 12 divisors (see below), whose sum is σ = 220340932. Its totient is φ = 121847040.

The previous prime is 165001519. The next prime is 165001531. The reversal of 165001525 is 525100561.

It is an interprime number because it is at equal distance from previous prime (165001519) and next prime (165001531).

It can be written as a sum of positive squares in 6 ways, for example, as 10297681 + 154703844 = 3209^2 + 12438^2 .

It is not a de Polignac number, because 165001525 - 2⁹ = 165001013 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 165001525.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 253524 + ... + 254173.

Almost surely, 2^165001525 is an apocalyptic number.

It is an amenable number.

165001525 is a deficient number, since it is larger than the sum of its proper divisors (55339407).

165001525 is a wasteful number, since it uses less digits than its factorization.

165001525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 507720 (or 507715 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 25.

The square root of 165001525 is about 12845.2919390725. The cubic root of 165001525 is about 548.4823450017.

The spelling of 165001525 in words is "one hundred sixty-five million, one thousand, five hundred twenty-five".