111225403 has 2 divisors, whose sum is σ = 111225404. Its totient is φ = 111225402.

The previous prime is 111225397. The next prime is 111225431. The reversal of 111225403 is 304522111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 111225403 - 2²¹ = 109128251 is a prime.

It is not a weakly prime, because it can be changed into another prime (111225463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55612701 + 55612702.

It is an arithmetic number, because the mean of its divisors is an integer number (55612702).

Almost surely, 2^111225403 is an apocalyptic number.

111225403 is a deficient number, since it is larger than the sum of its proper divisors (1).

111225403 is an equidigital number, since it uses as much as digits as its factorization.

111225403 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 111225403 is about 10546.3454807815. The cubic root of 111225403 is about 480.9146377103.

Adding to 111225403 its reverse (304522111), we get a palindrome (415747514).

It can be divided in two parts, 111225 and 403, that added together give a triangular number (111628 = T₄₇₂).

The spelling of 111225403 in words is "one hundred eleven million, two hundred twenty-five thousand, four hundred three".