225540313 has 4 divisors (see below), whose sum is σ = 226275280. Its totient is φ = 224805348.

The previous prime is 225540311. The next prime is 225540331. The reversal of 225540313 is 313045522.

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 225540313 - 2¹ = 225540311 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (225540311) 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, 367023 + ... + 367636.

It is an arithmetic number, because the mean of its divisors is an integer number (56568820).

Almost surely, 2^225540313 is an apocalyptic number.

It is an amenable number.

225540313 is a deficient number, since it is larger than the sum of its proper divisors (734967).

225540313 is an equidigital number, since it uses as much as digits as its factorization.

225540313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 734966.

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 225540313 is about 15017.9996337728. Note that the first 3 decimals coincide. The cubic root of 225540313 is about 608.7066685577.

Adding to 225540313 its reverse (313045522), we get a palindrome (538585835).

The spelling of 225540313 in words is "two hundred twenty-five million, five hundred forty thousand, three hundred thirteen".