8625521819 has 2 divisors, whose sum is σ = 8625521820. Its totient is φ = 8625521818.

The previous prime is 8625521803. The next prime is 8625521857. The reversal of 8625521819 is 9181255268.

8625521819 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 is a cyclic number.

It is not a de Polignac number, because 8625521819 - 2⁴ = 8625521803 is a prime.

It is a super-2 number, since 2×8625521819² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (8625521899) 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, 4312760909 + 4312760910.

It is an arithmetic number, because the mean of its divisors is an integer number (4312760910).

Almost surely, 2^8625521819 is an apocalyptic number.

8625521819 is a deficient number, since it is larger than the sum of its proper divisors (1).

8625521819 is an equidigital number, since it uses as much as digits as its factorization.

8625521819 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 345600, while the sum is 47.

The square root of 8625521819 is about 92873.6874415999. The cubic root of 8625521819 is about 2050.8243219888.

The spelling of 8625521819 in words is "eight billion, six hundred twenty-five million, five hundred twenty-one thousand, eight hundred nineteen".