225423231 has 8 divisors (see below), whose sum is σ = 327888384. Its totient is φ = 136620120.

The previous prime is 225423229. The next prime is 225423271. The reversal of 225423231 is 132324522.

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

It is not a de Polignac number, because 225423231 - 2¹ = 225423229 is a prime.

It is a super-2 number, since 2×225423231² = 101631266148958722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225423221) 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, 3415471 + ... + 3415536.

It is an arithmetic number, because the mean of its divisors is an integer number (40986048).

Almost surely, 2^225423231 is an apocalyptic number.

225423231 is a deficient number, since it is larger than the sum of its proper divisors (102465153).

225423231 is a wasteful number, since it uses less digits than its factorization.

225423231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6831021.

The product of its digits is 2880, while the sum is 24.

The square root of 225423231 is about 15014.1010719923. The cubic root of 225423231 is about 608.6013201627.

Adding to 225423231 its reverse (132324522), we get a palindrome (357747753).

The spelling of 225423231 in words is "two hundred twenty-five million, four hundred twenty-three thousand, two hundred thirty-one".