525660 has 24 divisors (see below), whose sum is σ = 1472016. Its totient is φ = 140160.

The previous prime is 525649. The next prime is 525671. The reversal of 525660 is 66525.

It is an interprime number because it is at equal distance from previous prime (525649) and next prime (525671).

It is a self number, because there is not a number n which added to its sum of digits gives 525660.

It is a congruent number.

It is an unprimeable number.

525660 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4321 + ... + 4440.

It is an arithmetic number, because the mean of its divisors is an integer number (61334).

2⁵²⁵⁶⁶⁰ is an apocalyptic number.

It is an amenable number.

525660 is an abundant number, since it is smaller than the sum of its proper divisors (946356).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

525660 is a wasteful number, since it uses less digits than its factorization.

525660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8773 (or 8771 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 525660 is about 725.0241375292. The cubic root of 525660 is about 80.7052233168.

The spelling of 525660 in words is "five hundred twenty-five thousand, six hundred sixty".