525630 has 32 divisors (see below), whose sum is σ = 1442304. Its totient is φ = 120096.

The previous prime is 525607. The next prime is 525641. The reversal of 525630 is 36525.

525630 = 361² + 362² + ... + 364².

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an alternating number because its digits alternate between odd and even.

It is a junction number, because it is equal to n+sod(n) for n = 525597 and 525606.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1042 + ... + 1461.

It is an arithmetic number, because the mean of its divisors is an integer number (45072).

2⁵²⁵⁶³⁰ is an apocalyptic number.

525630 is an abundant number, since it is smaller than the sum of its proper divisors (916674).

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

525630 is a wasteful number, since it uses less digits than its factorization.

525630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2520.

The product of its (nonzero) digits is 900, while the sum is 21.

The square root of 525630 is about 725.0034482677. The cubic root of 525630 is about 80.7036879753.

The spelling of 525630 in words is "five hundred twenty-five thousand, six hundred thirty".