6825297779 has 4 divisors (see below), whose sum is σ = 6825903240. Its totient is φ = 6824692320.

The previous prime is 6825297769. The next prime is 6825297797. The reversal of 6825297779 is 9777925286.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6825297779 - 2⁴ = 6825297763 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6825297769) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 285494 + ... + 308475.

It is an arithmetic number, because the mean of its divisors is an integer number (1706475810).

Almost surely, 2^6825297779 is an apocalyptic number.

6825297779 is a deficient number, since it is larger than the sum of its proper divisors (605461).

6825297779 is a wasteful number, since it uses less digits than its factorization.

6825297779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 605460.

The product of its digits is 26671680, while the sum is 62.

The square root of 6825297779 is about 82615.3604301282. The cubic root of 6825297779 is about 1896.8829573724.

The spelling of 6825297779 in words is "six billion, eight hundred twenty-five million, two hundred ninety-seven thousand, seven hundred seventy-nine".