5221220225 has 24 divisors (see below), whose sum is σ = 7275492672. Its totient is φ = 3688027200.

The previous prime is 5221220203. The next prime is 5221220231. The reversal of 5221220225 is 5220221225.

It is not a de Polignac number, because 5221220225 - 2¹² = 5221216129 is a prime.

It is a super-2 number, since 2×5221220225² = 54522281275898101250, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 5221220225.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 341771 + ... + 356720.

It is an arithmetic number, because the mean of its divisors is an integer number (303145528).

Almost surely, 2^5221220225 is an apocalyptic number.

It is an amenable number.

5221220225 is a deficient number, since it is larger than the sum of its proper divisors (2054272447).

5221220225 is a wasteful number, since it uses less digits than its factorization.

5221220225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 698537 (or 698532 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 5221220225 is about 72258.0114935361. The cubic root of 5221220225 is about 1734.8316518410.

The spelling of 5221220225 in words is "five billion, two hundred twenty-one million, two hundred twenty thousand, two hundred twenty-five".