225305123 has 2 divisors, whose sum is σ = 225305124. Its totient is φ = 225305122.

The previous prime is 225305111. The next prime is 225305141. The reversal of 225305123 is 321503522.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 225305123 - 2⁴ = 225305107 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (225305183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112652561 + 112652562.

It is an arithmetic number, because the mean of its divisors is an integer number (112652562).

Almost surely, 2^225305123 is an apocalyptic number.

225305123 is a deficient number, since it is larger than the sum of its proper divisors (1).

225305123 is an equidigital number, since it uses as much as digits as its factorization.

225305123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 225305123 is about 15010.1673208529. The cubic root of 225305123 is about 608.4950116251.

Adding to 225305123 its reverse (321503522), we get a palindrome (546808645).

The spelling of 225305123 in words is "two hundred twenty-five million, three hundred five thousand, one hundred twenty-three".