111619225 has 9 divisors (see below), whose sum is σ = 138473373. Its totient is φ = 89253120.

The previous prime is 111619223. The next prime is 111619237. The reversal of 111619225 is 522916111.

The square root of 111619225 is 10565.

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

It can be written as a sum of positive squares in 4 ways, for example, as 68112009 + 43507216 = 8253^2 + 6596^2 .

It is not a de Polignac number, because 111619225 - 2¹ = 111619223 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111619193 and 111619202.

It is not an unprimeable number, because it can be changed into a prime (111619223) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 51769 + ... + 53881.

Almost surely, 2^111619225 is an apocalyptic number.

111619225 is the 10565-th square number.

111619225 is the 5283-rd centered octagonal number.

It is an amenable number.

111619225 is a deficient number, since it is larger than the sum of its proper divisors (26854148).

111619225 is an frugal number, since it uses more digits than its factorization.

111619225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4236 (or 2118 counting only the distinct ones).

The product of its digits is 1080, while the sum is 28.

The cubic root of 111619225 is about 481.4815695577.

The spelling of 111619225 in words is "one hundred eleven million, six hundred nineteen thousand, two hundred twenty-five".