8513225563 has 2 divisors, whose sum is σ = 8513225564. Its totient is φ = 8513225562.

The previous prime is 8513225537. The next prime is 8513225599. The reversal of 8513225563 is 3655223158.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8513225563 - 2⁵ = 8513225531 is a prime.

It is not a weakly prime, because it can be changed into another prime (8513225503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4256612781 + 4256612782.

It is an arithmetic number, because the mean of its divisors is an integer number (4256612782).

Almost surely, 2^8513225563 is an apocalyptic number.

8513225563 is a deficient number, since it is larger than the sum of its proper divisors (1).

8513225563 is an equidigital number, since it uses as much as digits as its factorization.

8513225563 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 216000, while the sum is 40.

The square root of 8513225563 is about 92267.1423801561. The cubic root of 8513225563 is about 2041.8854767045.

The spelling of 8513225563 in words is "eight billion, five hundred thirteen million, two hundred twenty-five thousand, five hundred sixty-three".