2808728725 has 12 divisors (see below), whose sum is σ = 3799444320. Its totient is φ = 2042711600.

The previous prime is 2808728723. The next prime is 2808728737. The reversal of 2808728725 is 5278278082.

It is not a de Polignac number, because 2808728725 - 2¹ = 2808728723 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2808728723) by changing a digit.

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, 5106505 + ... + 5107054.

It is an arithmetic number, because the mean of its divisors is an integer number (316620360).

Almost surely, 2^2808728725 is an apocalyptic number.

2808728725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2808728725 is a deficient number, since it is larger than the sum of its proper divisors (990715595).

2808728725 is a wasteful number, since it uses less digits than its factorization.

2808728725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10213580 (or 10213575 counting only the distinct ones).

The product of its (nonzero) digits is 1003520, while the sum is 49.

The square root of 2808728725 is about 52997.4407400961. The cubic root of 2808728725 is about 1410.9228445531.

The spelling of 2808728725 in words is "two billion, eight hundred eight million, seven hundred twenty-eight thousand, seven hundred twenty-five".