525856 has 12 divisors (see below), whose sum is σ = 1035342. Its totient is φ = 262912.

The previous prime is 525839. The next prime is 525869. The reversal of 525856 is 658525.

525856 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 291600 + 234256 = 540^2 + 484^2 .

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

It is an unprimeable number.

525856 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8185 + ... + 8248.

2⁵²⁵⁸⁵⁶ is an apocalyptic number.

It is an amenable number.

525856 is a deficient number, since it is larger than the sum of its proper divisors (509486).

525856 is a wasteful number, since it uses less digits than its factorization.

525856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16443 (or 16435 counting only the distinct ones).

The product of its digits is 12000, while the sum is 31.

The square root of 525856 is about 725.1592928454. The cubic root of 525856 is about 80.7152527770.

Subtracting from 525856 its sum of digits (31), we obtain a triangular number (525825 = T₁₀₂₅).

The spelling of 525856 in words is "five hundred twenty-five thousand, eight hundred fifty-six".