13775222225 has 12 divisors (see below), whose sum is σ = 17095395036. Its totient is φ = 11011068480.

The previous prime is 13775222171. The next prime is 13775222267. The reversal of 13775222225 is 52222257731.

It can be written as a sum of positive squares in 6 ways, for example, as 1572043201 + 12203179024 = 39649^2 + 110468^2 .

It is not a de Polignac number, because 13775222225 - 2⁶ = 13775222161 is a prime.

It is a Duffinian number.

It is a Curzon number.

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, 196802 + ... + 257451.

It is an arithmetic number, because the mean of its divisors is an integer number (1424616253).

Almost surely, 2^13775222225 is an apocalyptic number.

It is an amenable number.

13775222225 is a deficient number, since it is larger than the sum of its proper divisors (3320172811).

13775222225 is a wasteful number, since it uses less digits than its factorization.

13775222225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 455476 (or 455471 counting only the distinct ones).

The product of its digits is 117600, while the sum is 38.

Adding to 13775222225 its reverse (52222257731), we get a palindrome (65997479956).

The spelling of 13775222225 in words is "thirteen billion, seven hundred seventy-five million, two hundred twenty-two thousand, two hundred twenty-five".