6979219825 has 6 divisors (see below), whose sum is σ = 8654232614. Its totient is φ = 5583375840.

The previous prime is 6979219801. The next prime is 6979219847. The reversal of 6979219825 is 5289129796.

It can be written as a sum of positive squares in 3 ways, for example, as 2427828529 + 4551391296 = 49273^2 + 67464^2 .

It is a de Polignac number, because none of the positive numbers 2^k-6979219825 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 6979219825.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 139584372 + ... + 139584421.

Almost surely, 2^6979219825 is an apocalyptic number.

It is an amenable number.

6979219825 is a deficient number, since it is larger than the sum of its proper divisors (1675012789).

6979219825 is a wasteful number, since it uses less digits than its factorization.

6979219825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279168803 (or 279168798 counting only the distinct ones).

The product of its digits is 4898880, while the sum is 58.

The square root of 6979219825 is about 83541.7250540112. The cubic root of 6979219825 is about 1911.0363996925.

The spelling of 6979219825 in words is "six billion, nine hundred seventy-nine million, two hundred nineteen thousand, eight hundred twenty-five".