5551111111225 has 12 divisors (see below), whose sum is σ = 7120735633260. Its totient is φ = 4287754788800.

The previous prime is 5551111111201. The next prime is 5551111111261. The reversal of 5551111111225 is 5221111111555.

It can be written as a sum of positive squares in 6 ways, for example, as 698488091536 + 4852623019689 = 835756^2 + 2202867^2 .

It is not a de Polignac number, because 5551111111225 - 2⁷ = 5551111111097 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3828351766 + ... + 3828353215.

It is an arithmetic number, because the mean of its divisors is an integer number (593394636105).

Almost surely, 2^{5551111111225} is an apocalyptic number.

It is an amenable number.

5551111111225 is a deficient number, since it is larger than the sum of its proper divisors (1569624522035).

5551111111225 is a wasteful number, since it uses less digits than its factorization.

5551111111225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7656705020 (or 7656705015 counting only the distinct ones).

The product of its digits is 2500, while the sum is 31.

The spelling of 5551111111225 in words is "five trillion, five hundred fifty-one billion, one hundred eleven million, one hundred eleven thousand, two hundred twenty-five".