111345679225 has 27 divisors (see below), whose sum is σ = 151786418511. Its totient is φ = 80965328400.

The previous prime is 111345679199. The next prime is 111345679231. The reversal of 111345679225 is 522976543111.

The square root of 111345679225 is 333685.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 40084444521 + 71261234704 = 200211^2 + 266948^2 .

It is not a de Polignac number, because 111345679225 - 2⁷ = 111345679097 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 18349642 + ... + 18355708.

Almost surely, 2^111345679225 is an apocalyptic number.

111345679225 is the 333685-th square number.

111345679225 is the 166843-rd centered octagonal number.

It is an amenable number.

111345679225 is a deficient number, since it is larger than the sum of its proper divisors (40440739286).

111345679225 is an frugal number, since it uses more digits than its factorization.

111345679225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12166 (or 6083 counting only the distinct ones).

The product of its digits is 453600, while the sum is 46.

The spelling of 111345679225 in words is "one hundred eleven billion, three hundred forty-five million, six hundred seventy-nine thousand, two hundred twenty-five".