2805306225 has 12 divisors (see below), whose sum is σ = 4638106416. Its totient is φ = 1496163280.

The previous prime is 2805306211. The next prime is 2805306233. The reversal of 2805306225 is 5226035082.

It is not a de Polignac number, because 2805306225 - 2⁵ = 2805306193 is a prime.

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 11 ways as a sum of consecutive naturals, for example, 18701967 + ... + 18702116.

It is an arithmetic number, because the mean of its divisors is an integer number (386508868).

Almost surely, 2^2805306225 is an apocalyptic number.

2805306225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2805306225 is a deficient number, since it is larger than the sum of its proper divisors (1832800191).

2805306225 is a wasteful number, since it uses less digits than its factorization.

2805306225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37404096 (or 37404091 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 33.

The square root of 2805306225 is about 52965.1416027561. The cubic root of 2805306225 is about 1410.3495310715.

The spelling of 2805306225 in words is "two billion, eight hundred five million, three hundred six thousand, two hundred twenty-five".