11216618425 has 6 divisors (see below), whose sum is σ = 13908606878. Its totient is φ = 8973294720.

The previous prime is 11216618407. The next prime is 11216618437. The reversal of 11216618425 is 52481661211.

It can be written as a sum of positive squares in 3 ways, for example, as 205893801 + 11010724624 = 14349^2 + 104932^2 .

It is not a de Polignac number, because 11216618425 - 2⁵ = 11216618393 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 224332344 + ... + 224332393.

Almost surely, 2^11216618425 is an apocalyptic number.

It is an amenable number.

11216618425 is a deficient number, since it is larger than the sum of its proper divisors (2691988453).

11216618425 is an equidigital number, since it uses as much as digits as its factorization.

11216618425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 448664747 (or 448664742 counting only the distinct ones).

The product of its digits is 23040, while the sum is 37.

The spelling of 11216618425 in words is "eleven billion, two hundred sixteen million, six hundred eighteen thousand, four hundred twenty-five".