111145125 has 64 divisors (see below), whose sum is σ = 227695104. Its totient is φ = 46886400.

The previous prime is 111145123. The next prime is 111145127. The reversal of 111145125 is 521541111.

It is an interprime number because it is at equal distance from previous prime (111145123) and next prime (111145127).

It is not a de Polignac number, because 111145125 - 2¹ = 111145123 is a prime.

It is a super-2 number, since 2×111145125² = 24706477622531250, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111145123) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 32497 + ... + 35753.

It is an arithmetic number, because the mean of its divisors is an integer number (3557736).

Almost surely, 2^111145125 is an apocalyptic number.

111145125 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

111145125 is an abundant number, since it is smaller than the sum of its proper divisors (116549979).

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

111145125 is a wasteful number, since it uses less digits than its factorization.

111145125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3295 (or 3285 counting only the distinct ones).

The product of its digits is 200, while the sum is 21.

The square root of 111145125 is about 10542.5388308509. The cubic root of 111145125 is about 480.7989082808.

Adding to 111145125 its reverse (521541111), we get a palindrome (632686236).

The spelling of 111145125 in words is "one hundred eleven million, one hundred forty-five thousand, one hundred twenty-five".