85544225 has 12 divisors (see below), whose sum is σ = 114234876. Its totient is φ = 63170880.

The previous prime is 85544209. The next prime is 85544231. The reversal of 85544225 is 52244558.

It can be written as a sum of positive squares in 6 ways, for example, as 4255969 + 81288256 = 2063^2 + 9016^2 .

It is not a de Polignac number, because 85544225 - 2⁴ = 85544209 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 (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 131282 + ... + 131931.

It is an arithmetic number, because the mean of its divisors is an integer number (9519573).

Almost surely, 2^85544225 is an apocalyptic number.

It is an amenable number.

85544225 is a deficient number, since it is larger than the sum of its proper divisors (28690651).

85544225 is a wasteful number, since it uses less digits than its factorization.

85544225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263236 (or 263231 counting only the distinct ones).

The product of its digits is 64000, while the sum is 35.

The square root of 85544225 is about 9249.0121094093. The cubic root of 85544225 is about 440.6193498932.

The spelling of 85544225 in words is "eighty-five million, five hundred forty-four thousand, two hundred twenty-five".