11112512225 has 6 divisors (see below), whose sum is σ = 13779515190. Its totient is φ = 8890009760.

The previous prime is 11112512219. The next prime is 11112512249. The reversal of 11112512225 is 52221521111.

It can be written as a sum of positive squares in 3 ways, for example, as 118570321 + 10993941904 = 10889^2 + 104852^2 .

It is not a de Polignac number, because 11112512225 - 2⁶ = 11112512161 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11112512225.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 222250220 + ... + 222250269.

It is an arithmetic number, because the mean of its divisors is an integer number (2296585865).

Almost surely, 2^11112512225 is an apocalyptic number.

It is an amenable number.

11112512225 is a deficient number, since it is larger than the sum of its proper divisors (2667002965).

11112512225 is an equidigital number, since it uses as much as digits as its factorization.

11112512225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 444500499 (or 444500494 counting only the distinct ones).

The product of its digits is 400, while the sum is 23.

The spelling of 11112512225 in words is "eleven billion, one hundred twelve million, five hundred twelve thousand, two hundred twenty-five".