85155225 has 12 divisors (see below), whose sum is σ = 140790096. Its totient is φ = 45416080.

The previous prime is 85155197. The next prime is 85155229. The reversal of 85155225 is 52255158.

It is not a de Polignac number, because 85155225 - 2⁷ = 85155097 is a prime.

It is not an unprimeable number, because it can be changed into a prime (85155229) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 567627 + ... + 567776.

It is an arithmetic number, because the mean of its divisors is an integer number (11732508).

Almost surely, 2^85155225 is an apocalyptic number.

It is an amenable number.

85155225 is a deficient number, since it is larger than the sum of its proper divisors (55634871).

85155225 is a wasteful number, since it uses less digits than its factorization.

85155225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1135416 (or 1135411 counting only the distinct ones).

The product of its digits is 20000, while the sum is 33.

The square root of 85155225 is about 9227.9588750709. The cubic root of 85155225 is about 439.9504506876.

The spelling of 85155225 in words is "eighty-five million, one hundred fifty-five thousand, two hundred twenty-five".