5220440440225 has 6 divisors (see below), whose sum is σ = 6473346145910. Its totient is φ = 4176352352160.

The previous prime is 5220440440169. The next prime is 5220440440231.

It is a happy number.

5220440440225 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 3 ways, for example, as 98474833249 + 5121965606976 = 313807^2 + 2263176^2 .

It is not a de Polignac number, because 5220440440225 - 2¹⁷ = 5220440309153 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 104408808780 + ... + 104408808829.

Almost surely, 2^{5220440440225} is an apocalyptic number.

It is an amenable number.

5220440440225 is a deficient number, since it is larger than the sum of its proper divisors (1252905705685).

5220440440225 is a wasteful number, since it uses less digits than its factorization.

5220440440225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208817617619 (or 208817617614 counting only the distinct ones).

The product of its (nonzero) digits is 102400, while the sum is 34.

It can be divided in two parts, 5220440 and 440225, that added together give a palindrome (5660665).

The spelling of 5220440440225 in words is "five trillion, two hundred twenty billion, four hundred forty million, four hundred forty thousand, two hundred twenty-five".