111625474181 has 16 divisors (see below), whose sum is σ = 123320132208. Its totient is φ = 100382016000.

The previous prime is 111625474153. The next prime is 111625474193. The reversal of 111625474181 is 181474526111.

It can be written as a sum of positive squares in 8 ways, for example, as 6555493156 + 105069981025 = 80966^2 + 324145^2 .

It is a cyclic number.

It is not a de Polignac number, because 111625474181 - 2¹⁸ = 111625212037 is a prime.

It is a super-2 number, since 2×111625474181² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111625474111) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 224255 + ... + 523011.

It is an arithmetic number, because the mean of its divisors is an integer number (7707508263).

Almost surely, 2^111625474181 is an apocalyptic number.

It is an amenable number.

111625474181 is a deficient number, since it is larger than the sum of its proper divisors (11694658027).

111625474181 is a wasteful number, since it uses less digits than its factorization.

111625474181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 299512.

The product of its digits is 53760, while the sum is 41.

The spelling of 111625474181 in words is "one hundred eleven billion, six hundred twenty-five million, four hundred seventy-four thousand, one hundred eighty-one".