111425287 has 2 divisors, whose sum is σ = 111425288. Its totient is φ = 111425286.

The previous prime is 111425261. The next prime is 111425309. The reversal of 111425287 is 782524111.

It is a strong prime.

It is an emirp because it is prime and its reverse (782524111) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111425287 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111425207) 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, 55712643 + 55712644.

It is an arithmetic number, because the mean of its divisors is an integer number (55712644).

Almost surely, 2^111425287 is an apocalyptic number.

111425287 is a deficient number, since it is larger than the sum of its proper divisors (1).

111425287 is an equidigital number, since it uses as much as digits as its factorization.

111425287 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4480, while the sum is 31.

The square root of 111425287 is about 10555.8176850493. The cubic root of 111425287 is about 481.2025504013.

Adding to 111425287 its reverse (782524111), we get a palindrome (893949398).

The spelling of 111425287 in words is "one hundred eleven million, four hundred twenty-five thousand, two hundred eighty-seven".