6920225281 has 2 divisors, whose sum is σ = 6920225282. Its totient is φ = 6920225280.

The previous prime is 6920225269. The next prime is 6920225287. The reversal of 6920225281 is 1825220296.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6891656256 + 28569025 = 83016^2 + 5345^2 .

It is a cyclic number.

It is not a de Polignac number, because 6920225281 - 2¹³ = 6920217089 is a prime.

It is a super-2 number, since 2×6920225281² = 95779035879583057922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 6920225281.

It is not a weakly prime, because it can be changed into another prime (6920225287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3460112640 + 3460112641.

It is an arithmetic number, because the mean of its divisors is an integer number (3460112641).

Almost surely, 2^6920225281 is an apocalyptic number.

It is an amenable number.

6920225281 is a deficient number, since it is larger than the sum of its proper divisors (1).

6920225281 is an equidigital number, since it uses as much as digits as its factorization.

6920225281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34560, while the sum is 37.

The square root of 6920225281 is about 83187.8914325877. The cubic root of 6920225281 is about 1905.6365658299.

The spelling of 6920225281 in words is "six billion, nine hundred twenty million, two hundred twenty-five thousand, two hundred eighty-one".