228025729 has 4 divisors (see below), whose sum is σ = 228627760. Its totient is φ = 227423700.

The previous prime is 228025673. The next prime is 228025799. The reversal of 228025729 is 927520822.

228025729 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 228025729 - 2¹⁷ = 227894657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (228025799) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 300447 + ... + 301204.

It is an arithmetic number, because the mean of its divisors is an integer number (57156940).

Almost surely, 2^228025729 is an apocalyptic number.

It is an amenable number.

228025729 is a deficient number, since it is larger than the sum of its proper divisors (602031).

228025729 is an equidigital number, since it uses as much as digits as its factorization.

228025729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 602030.

The product of its (nonzero) digits is 40320, while the sum is 37.

The square root of 228025729 is about 15100.5208188327. The cubic root of 228025729 is about 610.9344533034.

The spelling of 228025729 in words is "two hundred twenty-eight million, twenty-five thousand, seven hundred twenty-nine".