225666421317424 has 40 divisors (see below), whose sum is σ = 438149537380368. Its totient is φ = 112595604817920.

The previous prime is 225666421317413. The next prime is 225666421317451. The reversal of 225666421317424 is 424713124666522.

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, 113214664 + ... + 115190680.

Almost surely, 2^{225666421317424} is an apocalyptic number.

It is an amenable number.

225666421317424 is a deficient number, since it is larger than the sum of its proper divisors (212483116062944).

225666421317424 is a wasteful number, since it uses less digits than its factorization.

225666421317424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1991053 (or 1991047 counting only the distinct ones).

The product of its digits is 23224320, while the sum is 55.

The spelling of 225666421317424 in words is "two hundred twenty-five trillion, six hundred sixty-six billion, four hundred twenty-one million, three hundred seventeen thousand, four hundred twenty-four".