6825015081 has 6 divisors (see below), whose sum is σ = 9858355130. Its totient is φ = 4550010048.

The previous prime is 6825015059. The next prime is 6825015091. The reversal of 6825015081 is 1805105286.

It can be written as a sum of positive squares in only one way, i.e., 6804765081 + 20250000 = 82491^2 + 4500^2 .

It is not a de Polignac number, because 6825015081 - 2⁵ = 6825015049 is a prime.

It is a super-2 number, since 2×6825015081² = 93161661711754873122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6825015031) 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 5 ways as a sum of consecutive naturals, for example, 379167496 + ... + 379167513.

Almost surely, 2^6825015081 is an apocalyptic number.

It is an amenable number.

6825015081 is a deficient number, since it is larger than the sum of its proper divisors (3033340049).

6825015081 is a wasteful number, since it uses less digits than its factorization.

6825015081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 758335015 (or 758335012 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 36.

The square root of 6825015081 is about 82613.6494836053. The cubic root of 6825015081 is about 1896.8567679206.

The spelling of 6825015081 in words is "six billion, eight hundred twenty-five million, fifteen thousand, eighty-one".