225091663 has 4 divisors (see below), whose sum is σ = 225122128. Its totient is φ = 225061200.

The previous prime is 225091571. The next prime is 225091673. The reversal of 225091663 is 366190522.

225091663 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 225091663 - 2⁹ = 225091151 is a prime.

It is a super-3 number, since 3×225091663³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225091673) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3670 + ... + 21532.

It is an arithmetic number, because the mean of its divisors is an integer number (56280532).

Almost surely, 2^225091663 is an apocalyptic number.

225091663 is a deficient number, since it is larger than the sum of its proper divisors (30465).

225091663 is a wasteful number, since it uses less digits than its factorization.

225091663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30464.

The product of its (nonzero) digits is 19440, while the sum is 34.

The square root of 225091663 is about 15003.0551222076. The cubic root of 225091663 is about 608.3027828448.

The spelling of 225091663 in words is "two hundred twenty-five million, ninety-one thousand, six hundred sixty-three".