5220256009 has 2 divisors, whose sum is σ = 5220256010. Its totient is φ = 5220256008.

The previous prime is 5220256007. The next prime is 5220256031. The reversal of 5220256009 is 9006520225.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4162185225 + 1058070784 = 64515^2 + 32528^2 .

It is a cyclic number.

It is not a de Polignac number, because 5220256009 - 2¹ = 5220256007 is a prime.

Together with 5220256007, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (5220256001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2610128004 + 2610128005.

It is an arithmetic number, because the mean of its divisors is an integer number (2610128005).

Almost surely, 2^5220256009 is an apocalyptic number.

It is an amenable number.

5220256009 is a deficient number, since it is larger than the sum of its proper divisors (1).

5220256009 is an equidigital number, since it uses as much as digits as its factorization.

5220256009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10800, while the sum is 31.

The square root of 5220256009 is about 72251.3391502192. The cubic root of 5220256009 is about 1734.7248533440.

The spelling of 5220256009 in words is "five billion, two hundred twenty million, two hundred fifty-six thousand, nine".