6825406897 has 4 divisors (see below), whose sum is σ = 6825574260. Its totient is φ = 6825239536.

The previous prime is 6825406871. The next prime is 6825406901. The reversal of 6825406897 is 7986045286.

6825406897 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 958459681 + 5866947216 = 30959^2 + 76596^2 .

It is a cyclic number.

It is not a de Polignac number, because 6825406897 - 2⁷ = 6825406769 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6825406807) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21879 + ... + 118867.

It is an arithmetic number, because the mean of its divisors is an integer number (1706393565).

Almost surely, 2^6825406897 is an apocalyptic number.

It is an amenable number.

6825406897 is a deficient number, since it is larger than the sum of its proper divisors (167363).

6825406897 is an equidigital number, since it uses as much as digits as its factorization.

6825406897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167362.

The product of its (nonzero) digits is 5806080, while the sum is 55.

The square root of 6825406897 is about 82616.0208252612. The cubic root of 6825406897 is about 1896.8930659898.

The spelling of 6825406897 in words is "six billion, eight hundred twenty-five million, four hundred six thousand, eight hundred ninety-seven".