2805078265 has 24 divisors (see below), whose sum is σ = 3769774344. Its totient is φ = 2001542400.

The previous prime is 2805078259. The next prime is 2805078277. The reversal of 2805078265 is 5628705082.

2805078265 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 297873081 + 2507205184 = 17259^2 + 50072^2 .

It is a de Polignac number, because none of the positive numbers 2^k-2805078265 is a prime.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11676 + ... + 75805.

It is an arithmetic number, because the mean of its divisors is an integer number (157073931).

Almost surely, 2^2805078265 is an apocalyptic number.

It is an amenable number.

2805078265 is a deficient number, since it is larger than the sum of its proper divisors (964696079).

2805078265 is a wasteful number, since it uses less digits than its factorization.

2805078265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87561 (or 87550 counting only the distinct ones).

The product of its (nonzero) digits is 268800, while the sum is 43.

The square root of 2805078265 is about 52962.9895776286. The cubic root of 2805078265 is about 1410.3113282323.

The spelling of 2805078265 in words is "two billion, eight hundred five million, seventy-eight thousand, two hundred sixty-five".