111379825 has 12 divisors (see below), whose sum is σ = 138710988. Its totient is φ = 88716800.

The previous prime is 111379813. The next prime is 111379841. The reversal of 111379825 is 528973111.

It can be written as a sum of positive squares in 6 ways, for example, as 898704 + 110481121 = 948^2 + 10511^2 .

It is not a de Polignac number, because 111379825 - 2⁹ = 111379313 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 in 11 ways as a sum of consecutive naturals, for example, 3736 + ... + 15385.

It is an arithmetic number, because the mean of its divisors is an integer number (11559249).

Almost surely, 2^111379825 is an apocalyptic number.

It is an amenable number.

111379825 is a deficient number, since it is larger than the sum of its proper divisors (27331163).

111379825 is a wasteful number, since it uses less digits than its factorization.

111379825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19364 (or 19359 counting only the distinct ones).

The product of its digits is 15120, while the sum is 37.

The square root of 111379825 is about 10553.6640556728. The cubic root of 111379825 is about 481.1370972568.

The spelling of 111379825 in words is "one hundred eleven million, three hundred seventy-nine thousand, eight hundred twenty-five".