56111722225 has 18 divisors (see below), whose sum is σ = 75342443586. Its totient is φ = 41436345600.

The previous prime is 56111722223. The next prime is 56111722291. The reversal of 56111722225 is 52222711165.

It can be written as a sum of positive squares in 9 ways, for example, as 40881200481 + 15230521744 = 202191^2 + 123412^2 .

It is not a de Polignac number, because 56111722225 - 2¹ = 56111722223 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56111722223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 6636216 + ... + 6644665.

Almost surely, 2^56111722225 is an apocalyptic number.

It is an amenable number.

56111722225 is a deficient number, since it is larger than the sum of its proper divisors (19230721361).

56111722225 is a wasteful number, since it uses less digits than its factorization.

56111722225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13280917 (or 13280899 counting only the distinct ones).

The product of its digits is 16800, while the sum is 34.

The spelling of 56111722225 in words is "fifty-six billion, one hundred eleven million, seven hundred twenty-two thousand, two hundred twenty-five".