2805025028 has 24 divisors (see below), whose sum is σ = 5308352280. Its totient is φ = 1289249280.

The previous prime is 2805025021. The next prime is 2805025031. The reversal of 2805025028 is 8205205082.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1167042244 + 1637982784 = 34162^2 + 40472^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2805024985 and 2805025003.

It is not an unprimeable number, because it can be changed into a prime (2805025021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 99383 + ... + 124446.

It is an arithmetic number, because the mean of its divisors is an integer number (221181345).

Almost surely, 2^2805025028 is an apocalyptic number.

It is an amenable number.

2805025028 is a deficient number, since it is larger than the sum of its proper divisors (2503327252).

2805025028 is a wasteful number, since it uses less digits than its factorization.

2805025028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224087 (or 224085 counting only the distinct ones).

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

The square root of 2805025028 is about 52962.4869884336. The cubic root of 2805025028 is about 1410.3024061736.

The spelling of 2805025028 in words is "two billion, eight hundred five million, twenty-five thousand, twenty-eight".