8505285 has 32 divisors (see below), whose sum is σ = 14411520. Its totient is φ = 4274688.

The previous prime is 8505283. The next prime is 8505313. The reversal of 8505285 is 5825058.

It is not a de Polignac number, because 8505285 - 2¹ = 8505283 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8505283) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 30567 + ... + 30843.

It is an arithmetic number, because the mean of its divisors is an integer number (450360).

Almost surely, 2^8505285 is an apocalyptic number.

It is an amenable number.

8505285 is a deficient number, since it is larger than the sum of its proper divisors (5906235).

8505285 is a wasteful number, since it uses less digits than its factorization.

8505285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 397.

The product of its (nonzero) digits is 16000, while the sum is 33.

The square root of 8505285 is about 2916.3821766017. The cubic root of 8505285 is about 204.1250434840.

The spelling of 8505285 in words is "eight million, five hundred five thousand, two hundred eighty-five".