525904 has 10 divisors (see below), whose sum is σ = 1018970. Its totient is φ = 262944.

The previous prime is 525893. The next prime is 525913. The reversal of 525904 is 409525.

It can be written as a sum of positive squares in only one way, i.e., 462400 + 63504 = 680^2 + 252^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16419 + ... + 16450.

It is an arithmetic number, because the mean of its divisors is an integer number (101897).

2⁵²⁵⁹⁰⁴ is an apocalyptic number.

It is an amenable number.

525904 is a deficient number, since it is larger than the sum of its proper divisors (493066).

525904 is a wasteful number, since it uses less digits than its factorization.

525904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32877 (or 32871 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 525904 is about 725.1923882667. The cubic root of 525904 is about 80.7177085914.

The spelling of 525904 in words is "five hundred twenty-five thousand, nine hundred four".