111556225 has 12 divisors (see below), whose sum is σ = 150905520. Its totient is φ = 81131600.

The previous prime is 111556219. The next prime is 111556231. The reversal of 111556225 is 522655111.

It is an interprime number because it is at equal distance from previous prime (111556219) and next prime (111556231).

It is not a de Polignac number, because 111556225 - 2¹⁵ = 111523457 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 111556193 and 111556202.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 202555 + ... + 203104.

It is an arithmetic number, because the mean of its divisors is an integer number (12575460).

Almost surely, 2^111556225 is an apocalyptic number.

It is an amenable number.

111556225 is a deficient number, since it is larger than the sum of its proper divisors (39349295).

111556225 is a wasteful number, since it uses less digits than its factorization.

111556225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 405680 (or 405675 counting only the distinct ones).

The product of its digits is 3000, while the sum is 28.

The square root of 111556225 is about 10562.0180363414. The cubic root of 111556225 is about 481.3909667439.

It can be divided in two parts, 111556 and 225, that multiplied together give a square (25100100 = 5010²).

The spelling of 111556225 in words is "one hundred eleven million, five hundred fifty-six thousand, two hundred twenty-five".