111725228061 has 24 divisors (see below), whose sum is σ = 162409534560. Its totient is φ = 74008943136.

The previous prime is 111725228057. The next prime is 111725228071. The reversal of 111725228061 is 160822527111.

It is a happy number.

111725228061 is a `hidden beast` number, since 1 + 1 + 1 + 72 + 522 + 8 + 0 + 61 = 666.

It is not a de Polignac number, because 111725228061 - 2² = 111725228057 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111725228011) 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 23 ways as a sum of consecutive naturals, for example, 9763035 + ... + 9774471.

It is an arithmetic number, because the mean of its divisors is an integer number (6767063940).

Almost surely, 2^111725228061 is an apocalyptic number.

It is an amenable number.

111725228061 is a deficient number, since it is larger than the sum of its proper divisors (50684306499).

111725228061 is a wasteful number, since it uses less digits than its factorization.

111725228061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18265 (or 18262 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 36.

The spelling of 111725228061 in words is "one hundred eleven billion, seven hundred twenty-five million, two hundred twenty-eight thousand, sixty-one".