111228825 has 24 divisors (see below), whose sum is σ = 185318496. Its totient is φ = 58864000.

The previous prime is 111228823. The next prime is 111228827. The reversal of 111228825 is 528822111.

It is an interprime number because it is at equal distance from previous prime (111228823) and next prime (111228827).

It is not a de Polignac number, because 111228825 - 2¹ = 111228823 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 111228792 and 111228801.

It is not an unprimeable number, because it can be changed into a prime (111228823) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4165 + ... + 15485.

It is an arithmetic number, because the mean of its divisors is an integer number (7721604).

Almost surely, 2^111228825 is an apocalyptic number.

111228825 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

111228825 is a deficient number, since it is larger than the sum of its proper divisors (74089671).

111228825 is a wasteful number, since it uses less digits than its factorization.

111228825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11465 (or 11460 counting only the distinct ones).

The product of its digits is 2560, while the sum is 30.

The square root of 111228825 is about 10546.5077158271. The cubic root of 111228825 is about 480.9195696562.

The spelling of 111228825 in words is "one hundred eleven million, two hundred twenty-eight thousand, eight hundred twenty-five".