805052985 has 16 divisors (see below), whose sum is σ = 1405183680. Its totient is φ = 390328640.

The previous prime is 805052977. The next prime is 805053017. The reversal of 805052985 is 589250508.

It is not a de Polignac number, because 805052985 - 2³ = 805052977 is a prime.

It is a super-2 number, since 2×805052985² = 1296220617314820450, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2439390 + ... + 2439719.

It is an arithmetic number, because the mean of its divisors is an integer number (87823980).

Almost surely, 2^805052985 is an apocalyptic number.

It is an amenable number.

805052985 is a deficient number, since it is larger than the sum of its proper divisors (600130695).

805052985 is a wasteful number, since it uses less digits than its factorization.

805052985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4879128.

The product of its (nonzero) digits is 144000, while the sum is 42.

The square root of 805052985 is about 28373.4556407922. The cubic root of 805052985 is about 930.2681559943.

The spelling of 805052985 in words is "eight hundred five million, fifty-two thousand, nine hundred eighty-five".