525820 has 24 divisors (see below), whose sum is σ = 1124928. Its totient is φ = 206400.

The previous prime is 525817. The next prime is 525839. The reversal of 525820 is 28525.

It is a hoax number, since the sum of its digits (22) coincides with the sum of the digits of its distinct prime factors.

It is a d-powerful number, because it can be written as 5² + 2 + 8⁴ + 5⁸ + 2¹⁷ + 0 .

It is a junction number, because it is equal to n+sod(n) for n = 525791 and 525800.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1005 + ... + 1435.

It is an arithmetic number, because the mean of its divisors is an integer number (46872).

2⁵²⁵⁸²⁰ is an apocalyptic number.

It is an amenable number.

525820 is an abundant number, since it is smaller than the sum of its proper divisors (599108).

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

525820 is a wasteful number, since it uses less digits than its factorization.

525820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 501 (or 499 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 525820 is about 725.1344702881. The cubic root of 525820 is about 80.7134108181.

The spelling of 525820 in words is "five hundred twenty-five thousand, eight hundred twenty".