85813125 has 20 divisors (see below), whose sum is σ = 142979232. Its totient is φ = 45766000.

The previous prime is 85813121. The next prime is 85813141. The reversal of 85813125 is 52131858.

It is a happy number.

It is not a de Polignac number, because 85813125 - 2² = 85813121 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 (85813121) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 21009 + ... + 24758.

Almost surely, 2^85813125 is an apocalyptic number.

It is an amenable number.

85813125 is a deficient number, since it is larger than the sum of its proper divisors (57166107).

85813125 is an equidigital number, since it uses as much as digits as its factorization.

85813125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45790 (or 45775 counting only the distinct ones).

The product of its digits is 9600, while the sum is 33.

The square root of 85813125 is about 9263.5373912993. The cubic root of 85813125 is about 441.0805484268.

The spelling of 85813125 in words is "eighty-five million, eight hundred thirteen thousand, one hundred twenty-five".