850686125 has 8 divisors (see below), whose sum is σ = 1061656440. Its totient is φ = 680548800.

The previous prime is 850686121. The next prime is 850686127. The reversal of 850686125 is 521686058.

850686125 is digitally balanced in base 2, 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 4 ways, for example, as 3759721 + 846926404 = 1939^2 + 29102^2 .

It is not a de Polignac number, because 850686125 - 2² = 850686121 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (850686121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3402620 + ... + 3402869.

It is an arithmetic number, because the mean of its divisors is an integer number (132707055).

Almost surely, 2^850686125 is an apocalyptic number.

It is an amenable number.

850686125 is a deficient number, since it is larger than the sum of its proper divisors (210970315).

850686125 is an equidigital number, since it uses as much as digits as its factorization.

850686125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6805504 (or 6805494 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 41.

The square root of 850686125 is about 29166.5240472704. The cubic root of 850686125 is about 947.5230488008.

The spelling of 850686125 in words is "eight hundred fifty million, six hundred eighty-six thousand, one hundred twenty-five".