223665225 has 48 divisors (see below), whose sum is σ = 441019392. Its totient is φ = 97796160.

The previous prime is 223665181. The next prime is 223665227. The reversal of 223665225 is 522566322.

223665225 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 223665225 - 2⁷ = 223665097 is a prime.

It is a super-2 number, since 2×223665225² = 100052265748601250, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (223665227) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2814 + ... + 21336.

It is an arithmetic number, because the mean of its divisors is an integer number (9187904).

Almost surely, 2^223665225 is an apocalyptic number.

223665225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

223665225 is a deficient number, since it is larger than the sum of its proper divisors (217354167).

223665225 is a wasteful number, since it uses less digits than its factorization.

223665225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18566 (or 18561 counting only the distinct ones).

The product of its digits is 43200, while the sum is 33.

The square root of 223665225 is about 14955.4413174603. The cubic root of 223665225 is about 607.0150917180.

The spelling of 223665225 in words is "two hundred twenty-three million, six hundred sixty-five thousand, two hundred twenty-five".