2688198925 has 12 divisors (see below), whose sum is σ = 3423458836. Its totient is φ = 2092435200.

The previous prime is 2688198911. The next prime is 2688198941. The reversal of 2688198925 is 5298918862.

It can be written as a sum of positive squares in 6 ways, for example, as 114361636 + 2573837289 = 10694^2 + 50733^2 .

It is not a de Polignac number, because 2688198925 - 2¹⁷ = 2688067853 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2688198925.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1452156 + ... + 1454005.

Almost surely, 2^2688198925 is an apocalyptic number.

2688198925 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2688198925 is a deficient number, since it is larger than the sum of its proper divisors (735259911).

2688198925 is a wasteful number, since it uses less digits than its factorization.

2688198925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2906208 (or 2906203 counting only the distinct ones).

The product of its digits is 4976640, while the sum is 58.

The square root of 2688198925 is about 51847.8439763892. The cubic root of 2688198925 is about 1390.4449561462. Note that the first 3 decimals are identical.

The spelling of 2688198925 in words is "two billion, six hundred eighty-eight million, one hundred ninety-eight thousand, nine hundred twenty-five".