85285225 has 9 divisors (see below), whose sum is σ = 105810967. Its totient is φ = 68191240.

The previous prime is 85285217. The next prime is 85285237. The reversal of 85285225 is 52258258.

The square root of 85285225 is 9235.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 30702681 + 54582544 = 5541^2 + 7388^2 .

It is not a de Polignac number, because 85285225 - 2³ = 85285217 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 (13) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 45252 + ... + 47098.

Almost surely, 2^85285225 is an apocalyptic number.

85285225 is the 9235-th square number.

85285225 is the 4618-th centered octagonal number.

It is an amenable number.

85285225 is a deficient number, since it is larger than the sum of its proper divisors (20525742).

85285225 is an frugal number, since it uses more digits than its factorization.

85285225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3704 (or 1852 counting only the distinct ones).

The product of its digits is 64000, while the sum is 37.

The cubic root of 85285225 is about 440.1742164788.

The spelling of 85285225 in words is "eighty-five million, two hundred eighty-five thousand, two hundred twenty-five".