225921964 has 12 divisors (see below), whose sum is σ = 397371744. Its totient is φ = 112387184.

The previous prime is 225921953. The next prime is 225921973. The reversal of 225921964 is 469129522.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 142564 + ... + 144139.

It is an arithmetic number, because the mean of its divisors is an integer number (33114312).

Almost surely, 2^225921964 is an apocalyptic number.

It is an amenable number.

225921964 is a deficient number, since it is larger than the sum of its proper divisors (171449780).

225921964 is a wasteful number, since it uses less digits than its factorization.

225921964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286904 (or 286902 counting only the distinct ones).

The product of its digits is 77760, while the sum is 40.

The square root of 225921964 is about 15030.7007155355. The cubic root of 225921964 is about 609.0498187338.

The spelling of 225921964 in words is "two hundred twenty-five million, nine hundred twenty-one thousand, nine hundred sixty-four".