6819431825 has 12 divisors (see below), whose sum is σ = 8615646108. Its totient is φ = 5352609600.

The previous prime is 6819431819. The next prime is 6819431849. The reversal of 6819431825 is 5281349186.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 1957201 + 6817474624 = 1399^2 + 82568^2 .

It is not a de Polignac number, because 6819431825 - 2¹⁰ = 6819430801 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 6819431825.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2572046 + ... + 2574695.

It is an arithmetic number, because the mean of its divisors is an integer number (717970509).

Almost surely, 2^6819431825 is an apocalyptic number.

It is an amenable number.

6819431825 is a deficient number, since it is larger than the sum of its proper divisors (1796214283).

6819431825 is a wasteful number, since it uses less digits than its factorization.

6819431825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5146804 (or 5146799 counting only the distinct ones).

The product of its digits is 414720, while the sum is 47.

The square root of 6819431825 is about 82579.8512047582. The cubic root of 6819431825 is about 1896.3393807287.

The spelling of 6819431825 in words is "six billion, eight hundred nineteen million, four hundred thirty-one thousand, eight hundred twenty-five".