525185 has 4 divisors (see below), whose sum is σ = 630228. Its totient is φ = 420144.

The previous prime is 525167. The next prime is 525191. The reversal of 525185 is 581525.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 78961 + 446224 = 281^2 + 668^2 .

It is a cyclic number.

It is not a de Polignac number, because 525185 - 2¹⁶ = 459649 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52514 + ... + 52523.

It is an arithmetic number, because the mean of its divisors is an integer number (157557).

2⁵²⁵¹⁸⁵ is an apocalyptic number.

It is an amenable number.

525185 is a deficient number, since it is larger than the sum of its proper divisors (105043).

525185 is a wasteful number, since it uses less digits than its factorization.

525185 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105042.

The product of its digits is 2000, while the sum is 26.

The square root of 525185 is about 724.6964881935. The cubic root of 525185 is about 80.6809068805.

The spelling of 525185 in words is "five hundred twenty-five thousand, one hundred eighty-five".