2805802025 has 12 divisors (see below), whose sum is σ = 3746825292. Its totient is φ = 2071976640.

The previous prime is 2805802007. The next prime is 2805802049. The reversal of 2805802025 is 5202085082.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 533563801 + 2272238224 = 23099^2 + 47668^2 .

It is not a de Polignac number, because 2805802025 - 2²⁴ = 2789024809 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2805801982 and 2805802000.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4316294 + ... + 4316943.

It is an arithmetic number, because the mean of its divisors is an integer number (312235441).

Almost surely, 2^2805802025 is an apocalyptic number.

2805802025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2805802025 is a deficient number, since it is larger than the sum of its proper divisors (941023267).

2805802025 is a wasteful number, since it uses less digits than its factorization.

2805802025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8633260 (or 8633255 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 32.

The square root of 2805802025 is about 52969.8218328134. The cubic root of 2805802025 is about 1410.4326129232.

The spelling of 2805802025 in words is "two billion, eight hundred five million, eight hundred two thousand, twenty-five".