111625420566 has 32 divisors (see below), whose sum is σ = 243564350976. Its totient is φ = 33823388000.

The previous prime is 111625420561. The next prime is 111625420597. The reversal of 111625420566 is 665024526111.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111625420561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 965731 + ... + 1075121.

It is an arithmetic number, because the mean of its divisors is an integer number (7611385968).

Almost surely, 2^111625420566 is an apocalyptic number.

111625420566 is an abundant number, since it is smaller than the sum of its proper divisors (131938930410).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

111625420566 is a wasteful number, since it uses less digits than its factorization.

111625420566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124868.

The product of its (nonzero) digits is 86400, while the sum is 39.

Adding to 111625420566 its reverse (665024526111), we get a palindrome (776649946677).

The spelling of 111625420566 in words is "one hundred eleven billion, six hundred twenty-five million, four hundred twenty thousand, five hundred sixty-six".