8254208681 has 2 divisors, whose sum is σ = 8254208682. Its totient is φ = 8254208680.

The previous prime is 8254208617. The next prime is 8254208777. The reversal of 8254208681 is 1868024528.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7723597456 + 530611225 = 87884^2 + 23035^2 .

It is a cyclic number.

It is not a de Polignac number, because 8254208681 - 2⁶ = 8254208617 is a prime.

It is a super-2 number, since 2×8254208681² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (8254205681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4127104340 + 4127104341.

It is an arithmetic number, because the mean of its divisors is an integer number (4127104341).

Almost surely, 2^8254208681 is an apocalyptic number.

It is an amenable number.

8254208681 is a deficient number, since it is larger than the sum of its proper divisors (1).

8254208681 is an equidigital number, since it uses as much as digits as its factorization.

8254208681 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 245760, while the sum is 44.

The square root of 8254208681 is about 90852.6756953256. The cubic root of 8254208681 is about 2020.9635537190.

The spelling of 8254208681 in words is "eight billion, two hundred fifty-four million, two hundred eight thousand, six hundred eighty-one".