225515723 has 2 divisors, whose sum is σ = 225515724. Its totient is φ = 225515722.

The previous prime is 225515711. The next prime is 225515747. The reversal of 225515723 is 327515522.

225515723 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 225515723 - 2¹⁶ = 225450187 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 225515723.

It is not a weakly prime, because it can be changed into another prime (225511723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112757861 + 112757862.

It is an arithmetic number, because the mean of its divisors is an integer number (112757862).

Almost surely, 2^225515723 is an apocalyptic number.

225515723 is a deficient number, since it is larger than the sum of its proper divisors (1).

225515723 is an equidigital number, since it uses as much as digits as its factorization.

225515723 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21000, while the sum is 32.

The square root of 225515723 is about 15017.1809271914. The cubic root of 225515723 is about 608.6845459184.

The spelling of 225515723 in words is "two hundred twenty-five million, five hundred fifteen thousand, seven hundred twenty-three".