8579425081 has 2 divisors, whose sum is σ = 8579425082. Its totient is φ = 8579425080.

The previous prime is 8579425069. The next prime is 8579425123. The reversal of 8579425081 is 1805249758.

It is a happy number.

8579425081 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7817389056 + 762036025 = 88416^2 + 27605^2 .

It is a cyclic number.

It is not a de Polignac number, because 8579425081 - 2²¹ = 8577327929 is a prime.

It is a super-2 number, since 2×8579425081² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (8579425021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4289712540 + 4289712541.

It is an arithmetic number, because the mean of its divisors is an integer number (4289712541).

Almost surely, 2^8579425081 is an apocalyptic number.

It is an amenable number.

8579425081 is a deficient number, since it is larger than the sum of its proper divisors (1).

8579425081 is an equidigital number, since it uses as much as digits as its factorization.

8579425081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 806400, while the sum is 49.

The square root of 8579425081 is about 92625.1859971142. The cubic root of 8579425081 is about 2047.1644382530.

The spelling of 8579425081 in words is "eight billion, five hundred seventy-nine million, four hundred twenty-five thousand, eighty-one".