225735666 has 24 divisors (see below), whose sum is σ = 488873520. Its totient is φ = 69456816.

The previous prime is 225735659. The next prime is 225735667. The reversal of 225735666 is 666537522.

It is not an unprimeable number, because it can be changed into a prime (225735667) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 110296 + ... + 112323.

It is an arithmetic number, because the mean of its divisors is an integer number (20369730).

Almost surely, 2^225735666 is an apocalyptic number.

225735666 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

225735666 is an abundant number, since it is smaller than the sum of its proper divisors (263137854).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

225735666 is a wasteful number, since it uses less digits than its factorization.

225735666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222650 (or 222637 counting only the distinct ones).

The product of its digits is 453600, while the sum is 42.

The square root of 225735666 is about 15024.5021880926. The cubic root of 225735666 is about 608.8823627333.

The spelling of 225735666 in words is "two hundred twenty-five million, seven hundred thirty-five thousand, six hundred sixty-six".