525866 has 24 divisors (see below), whose sum is σ = 904932. Its totient is φ = 228800.

The previous prime is 525839. The next prime is 525869. The reversal of 525866 is 668525.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 511225 + 14641 = 715^2 + 121^2 .

It is not an unprimeable number, because it can be changed into a prime (525869) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9896 + ... + 9948.

2⁵²⁵⁸⁶⁶ is an apocalyptic number.

525866 is a deficient number, since it is larger than the sum of its proper divisors (379066).

525866 is a wasteful number, since it uses less digits than its factorization.

525866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118 (or 107 counting only the distinct ones).

The product of its digits is 14400, while the sum is 32.

The square root of 525866 is about 725.1661878494. The cubic root of 525866 is about 80.7157644173.

The spelling of 525866 in words is "five hundred twenty-five thousand, eight hundred sixty-six".