111825342749 has 4 divisors (see below), whose sum is σ = 112054964064. Its totient is φ = 111595721436.

The previous prime is 111825342737. The next prime is 111825342767. The reversal of 111825342749 is 947243528111.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111825342749 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111885342749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 114809927 + ... + 114810900.

It is an arithmetic number, because the mean of its divisors is an integer number (28013741016).

Almost surely, 2^111825342749 is an apocalyptic number.

It is an amenable number.

111825342749 is a deficient number, since it is larger than the sum of its proper divisors (229621315).

111825342749 is an equidigital number, since it uses as much as digits as its factorization.

111825342749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229621314.

The product of its digits is 483840, while the sum is 47.

The spelling of 111825342749 in words is "one hundred eleven billion, eight hundred twenty-five million, three hundred forty-two thousand, seven hundred forty-nine".