225105128 has 32 divisors (see below), whose sum is σ = 434496000. Its totient is φ = 109287360.

The previous prime is 225105053. The next prime is 225105157. The reversal of 225105128 is 821501522.

It is a junction number, because it is equal to n+sod(n) for n = 225105097 and 225105106.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35633 + ... + 41471.

It is an arithmetic number, because the mean of its divisors is an integer number (13578000).

Almost surely, 2^225105128 is an apocalyptic number.

It is an amenable number.

225105128 is a deficient number, since it is larger than the sum of its proper divisors (209390872).

225105128 is a wasteful number, since it uses less digits than its factorization.

225105128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5985 (or 5981 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 26.

The square root of 225105128 is about 15003.5038574328. The cubic root of 225105128 is about 608.3149121755.

The spelling of 225105128 in words is "two hundred twenty-five million, one hundred five thousand, one hundred twenty-eight".