225229929 has 4 divisors (see below), whose sum is σ = 300306576. Its totient is φ = 150153284.

The previous prime is 225229883. The next prime is 225229937. The reversal of 225229929 is 929922522.

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 225229929 - 2⁸ = 225229673 is a prime.

It is not an unprimeable number, because it can be changed into a prime (225229129) 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, 37538319 + ... + 37538324.

It is an arithmetic number, because the mean of its divisors is an integer number (75076644).

Almost surely, 2^225229929 is an apocalyptic number.

It is an amenable number.

225229929 is a deficient number, since it is larger than the sum of its proper divisors (75076647).

225229929 is an equidigital number, since it uses as much as digits as its factorization.

225229929 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75076646.

The product of its digits is 116640, while the sum is 42.

The square root of 225229929 is about 15007.6623429500. The cubic root of 225229929 is about 608.4273104496.

The spelling of 225229929 in words is "two hundred twenty-five million, two hundred twenty-nine thousand, nine hundred twenty-nine".