805180245 has 32 divisors (see below), whose sum is σ = 1310515200. Its totient is φ = 422071104.

The previous prime is 805180237. The next prime is 805180247. The reversal of 805180245 is 542081508.

It is not a de Polignac number, because 805180245 - 2³ = 805180237 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (805180247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 281794 + ... + 284636.

It is an arithmetic number, because the mean of its divisors is an integer number (40953600).

Almost surely, 2^805180245 is an apocalyptic number.

It is an amenable number.

805180245 is a deficient number, since it is larger than the sum of its proper divisors (505334955).

805180245 is a wasteful number, since it uses less digits than its factorization.

805180245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3169.

The product of its (nonzero) digits is 12800, while the sum is 33.

The square root of 805180245 is about 28375.6981411912. The cubic root of 805180245 is about 930.3171712725.

The spelling of 805180245 in words is "eight hundred five million, one hundred eighty thousand, two hundred forty-five".