6825297778 has 8 divisors (see below), whose sum is σ = 11025481068. Its totient is φ = 3150137424.

The previous prime is 6825297769. The next prime is 6825297797. The reversal of 6825297778 is 8777925286.

6825297778 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 5344048609 + 1481249169 = 73103^2 + 38487^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 131255701 + ... + 131255752.

Almost surely, 2^6825297778 is an apocalyptic number.

6825297778 is a deficient number, since it is larger than the sum of its proper divisors (4200183290).

6825297778 is a wasteful number, since it uses less digits than its factorization.

6825297778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262511468.

The product of its digits is 23708160, while the sum is 61.

The square root of 6825297778 is about 82615.3604240761. The cubic root of 6825297778 is about 1896.8829572798.

The spelling of 6825297778 in words is "six billion, eight hundred twenty-five million, two hundred ninety-seven thousand, seven hundred seventy-eight".