8255485517 has 2 divisors, whose sum is σ = 8255485518. Its totient is φ = 8255485516.

The previous prime is 8255485501. The next prime is 8255485529. The reversal of 8255485517 is 7155845528.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7848010921 + 407474596 = 88589^2 + 20186^2 .

It is a cyclic number.

It is not a de Polignac number, because 8255485517 - 2⁴ = 8255485501 is a prime.

It is a super-2 number, since 2×8255485517² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8255485417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4127742758 + 4127742759.

It is an arithmetic number, because the mean of its divisors is an integer number (4127742759).

Almost surely, 2^8255485517 is an apocalyptic number.

It is an amenable number.

8255485517 is a deficient number, since it is larger than the sum of its proper divisors (1).

8255485517 is an equidigital number, since it uses as much as digits as its factorization.

8255485517 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2240000, while the sum is 50.

The square root of 8255485517 is about 90859.7023822993. The cubic root of 8255485517 is about 2021.0677553481.

The spelling of 8255485517 in words is "eight billion, two hundred fifty-five million, four hundred eighty-five thousand, five hundred seventeen".