525850 has 24 divisors (see below), whose sum is σ = 1054620. Its totient is φ = 193920.

The previous prime is 525839. The next prime is 525869. The reversal of 525850 is 58525.

It can be written as a sum of positive squares in 6 ways, for example, as 199809 + 326041 = 447^2 + 571^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 246 + ... + 1054.

2⁵²⁵⁸⁵⁰ is an apocalyptic number.

525850 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

525850 is an abundant number, since it is smaller than the sum of its proper divisors (528770).

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

525850 is a wasteful number, since it uses less digits than its factorization.

525850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 834 (or 829 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 25.

The square root of 525850 is about 725.1551558115. The cubic root of 525850 is about 80.7149457897.

Subtracting from 525850 its sum of digits (25), we obtain a triangular number (525825 = T₁₀₂₅).

The spelling of 525850 in words is "five hundred twenty-five thousand, eight hundred fifty".