850525 has 12 divisors (see below), whose sum is σ = 1136212. Its totient is φ = 627840.

The previous prime is 850481. The next prime is 850529. The reversal of 850525 is 525058.

It can be written as a sum of positive squares in 6 ways, for example, as 441 + 850084 = 21^2 + 922^2 .

It is not a de Polignac number, because 850525 - 2⁷ = 850397 is a prime.

It is a hoax number, since the sum of its digits (25) coincides with the sum of the digits of its distinct prime factors.

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 even and odd.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 850525.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (850529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 984 + ... + 1633.

2⁸⁵⁰⁵²⁵ is an apocalyptic number.

It is an amenable number.

850525 is a deficient number, since it is larger than the sum of its proper divisors (285687).

850525 is a wasteful number, since it uses less digits than its factorization.

850525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2640 (or 2635 counting only the distinct ones).

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

The square root of 850525 is about 922.2391230044. The cubic root of 850525 is about 94.7463222861.

The spelling of 850525 in words is "eight hundred fifty thousand, five hundred twenty-five".