225945729 has 12 divisors (see below), whose sum is σ = 326500096. Its totient is φ = 150568632.

The previous prime is 225945719. The next prime is 225945749. The reversal of 225945729 is 927549522.

225945729 is a `hidden beast` number, since 2 + 2 + 594 + 57 + 2 + 9 = 666.

225945729 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 225945729 - 2⁵ = 225945697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (225945719) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32304 + ... + 38670.

Almost surely, 2^225945729 is an apocalyptic number.

It is an amenable number.

225945729 is a deficient number, since it is larger than the sum of its proper divisors (100554367).

225945729 is a wasteful number, since it uses less digits than its factorization.

225945729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10316 (or 10313 counting only the distinct ones).

The product of its digits is 453600, while the sum is 45.

The square root of 225945729 is about 15031.4912433863. The cubic root of 225945729 is about 609.0711735432.

The spelling of 225945729 in words is "two hundred twenty-five million, nine hundred forty-five thousand, seven hundred twenty-nine".