2575884778 has 32 divisors (see below), whose sum is σ = 4198149648. Its totient is φ = 1180569600.

The previous prime is 2575884769. The next prime is 2575884791. The reversal of 2575884778 is 8774885752.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 540702009 + 2035182769 = 23253^2 + 45113^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1054038 + ... + 1056478.

Almost surely, 2^2575884778 is an apocalyptic number.

2575884778 is a deficient number, since it is larger than the sum of its proper divisors (1622264870).

2575884778 is a wasteful number, since it uses less digits than its factorization.

2575884778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3258.

The product of its digits is 35123200, while the sum is 61.

The square root of 2575884778 is about 50753.1750533895. The cubic root of 2575884778 is about 1370.8043615039.

The spelling of 2575884778 in words is "two billion, five hundred seventy-five million, eight hundred eighty-four thousand, seven hundred seventy-eight".