111366612225 has 162 divisors, whose sum is σ = 221996659794. Its totient is φ = 53328000000.

The previous prime is 111366612223. The next prime is 111366612229. The reversal of 111366612225 is 522216663111.

It can be written as a sum of positive squares in 9 ways, for example, as 16428061584 + 94938550641 = 128172^2 + 308121^2 .

It is not a de Polignac number, because 111366612225 - 2¹ = 111366612223 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 111366612225.

It is not an unprimeable number, because it can be changed into a prime (111366612223) by changing a digit.

It is a polite number, since it can be written in 161 ways as a sum of consecutive naturals, for example, 277722025 + ... + 277722425.

Almost surely, 2^111366612225 is an apocalyptic number.

111366612225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

111366612225 is a deficient number, since it is larger than the sum of its proper divisors (110630047569).

111366612225 is a wasteful number, since it uses less digits than its factorization.

111366612225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 641 (or 521 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The spelling of 111366612225 in words is "one hundred eleven billion, three hundred sixty-six million, six hundred twelve thousand, two hundred twenty-five".