2728618525 has 24 divisors (see below), whose sum is σ = 3460492800. Its totient is φ = 2133768000.

The previous prime is 2728618433. The next prime is 2728618553. The reversal of 2728618525 is 5258168272.

It is not a de Polignac number, because 2728618525 - 2⁷ = 2728618397 is a prime.

It is a congruent 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, 192636 + ... + 206314.

It is an arithmetic number, because the mean of its divisors is an integer number (144187200).

Almost surely, 2^2728618525 is an apocalyptic number.

2728618525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2728618525 is a deficient number, since it is larger than the sum of its proper divisors (731874275).

2728618525 is a wasteful number, since it uses less digits than its factorization.

2728618525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13869 (or 13864 counting only the distinct ones).

The product of its digits is 537600, while the sum is 46.

The square root of 2728618525 is about 52236.1802297986. The cubic root of 2728618525 is about 1397.3791998143.

The spelling of 2728618525 in words is "two billion, seven hundred twenty-eight million, six hundred eighteen thousand, five hundred twenty-five".