225789729 has 8 divisors (see below), whose sum is σ = 328421472. Its totient is φ = 136842240.

The previous prime is 225789721. The next prime is 225789757. The reversal of 225789729 is 927987522.

225789729 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 225789729 - 2³ = 225789721 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (225789721) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3421024 + ... + 3421089.

It is an arithmetic number, because the mean of its divisors is an integer number (41052684).

Almost surely, 2^225789729 is an apocalyptic number.

It is an amenable number.

225789729 is a deficient number, since it is larger than the sum of its proper divisors (102631743).

225789729 is a wasteful number, since it uses less digits than its factorization.

225789729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6842127.

The product of its digits is 1270080, while the sum is 51.

The square root of 225789729 is about 15026.3012414899. The cubic root of 225789729 is about 608.9309673397.

The spelling of 225789729 in words is "two hundred twenty-five million, seven hundred eighty-nine thousand, seven hundred twenty-nine".