225440331 has 4 divisors (see below), whose sum is σ = 300587112. Its totient is φ = 150293552.

The previous prime is 225440329. The next prime is 225440351. The reversal of 225440331 is 133044522.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 225440331 - 2¹ = 225440329 is a prime.

It is a super-2 number, since 2×225440331² = 101646685682779122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (225440321) 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, 37573386 + ... + 37573391.

It is an arithmetic number, because the mean of its divisors is an integer number (75146778).

Almost surely, 2^225440331 is an apocalyptic number.

225440331 is a deficient number, since it is larger than the sum of its proper divisors (75146781).

225440331 is an equidigital number, since it uses as much as digits as its factorization.

225440331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75146780.

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

The square root of 225440331 is about 15014.6705258557. The cubic root of 225440331 is about 608.6167087266.

Adding to 225440331 its reverse (133044522), we get a palindrome (358484853).

The spelling of 225440331 in words is "two hundred twenty-five million, four hundred forty thousand, three hundred thirty-one".