225102128 has 20 divisors (see below), whose sum is σ = 436616400. Its totient is φ = 112426944.

The previous prime is 225102107. The next prime is 225102131. The reversal of 225102128 is 821201522.

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 3 ways as a sum of consecutive naturals, for example, 8198 + ... + 22746.

It is an arithmetic number, because the mean of its divisors is an integer number (21830820).

Almost surely, 2^225102128 is an apocalyptic number.

It is an amenable number.

225102128 is a deficient number, since it is larger than the sum of its proper divisors (211514272).

225102128 is a wasteful number, since it uses less digits than its factorization.

225102128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15524 (or 15518 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 23.

The square root of 225102128 is about 15003.4038804533. The cubic root of 225102128 is about 608.3122098043.

The spelling of 225102128 in words is "two hundred twenty-five million, one hundred two thousand, one hundred twenty-eight".