225720566 has 8 divisors (see below), whose sum is σ = 341745480. Its totient is φ = 111805408.

The previous prime is 225720559. The next prime is 225720581. The reversal of 225720566 is 665027522.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 527171 + ... + 527598.

It is an arithmetic number, because the mean of its divisors is an integer number (42718185).

Almost surely, 2^225720566 is an apocalyptic number.

225720566 is a deficient number, since it is larger than the sum of its proper divisors (116024914).

225720566 is a wasteful number, since it uses less digits than its factorization.

225720566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1054878.

The product of its (nonzero) digits is 50400, while the sum is 35.

The square root of 225720566 is about 15023.9996671991. Note that the first 3 decimals coincide. The cubic root of 225720566 is about 608.8687858968.

The spelling of 225720566 in words is "two hundred twenty-five million, seven hundred twenty thousand, five hundred sixty-six".