225187323 has 4 divisors (see below), whose sum is σ = 300249768. Its totient is φ = 150124880.

The previous prime is 225187307. The next prime is 225187327. The reversal of 225187323 is 323781522.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 225187323 - 2⁴ = 225187307 is a prime.

It is not an unprimeable number, because it can be changed into a prime (225187327) 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 3 ways as a sum of consecutive naturals, for example, 37531218 + ... + 37531223.

It is an arithmetic number, because the mean of its divisors is an integer number (75062442).

Almost surely, 2^225187323 is an apocalyptic number.

225187323 is a deficient number, since it is larger than the sum of its proper divisors (75062445).

225187323 is an equidigital number, since it uses as much as digits as its factorization.

225187323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75062444.

The product of its digits is 20160, while the sum is 33.

The square root of 225187323 is about 15006.2428009146. The cubic root of 225187323 is about 608.3889433036.

The spelling of 225187323 in words is "two hundred twenty-five million, one hundred eighty-seven thousand, three hundred twenty-three".