225540115 has 4 divisors (see below), whose sum is σ = 270648144. Its totient is φ = 180432088.

The previous prime is 225540113. The next prime is 225540137. The reversal of 225540115 is 511045522.

225540115 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.

It is a cyclic number.

It is not a de Polignac number, because 225540115 - 2¹ = 225540113 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 225540115.

It is not an unprimeable number, because it can be changed into a prime (225540113) 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, 22554007 + ... + 22554016.

It is an arithmetic number, because the mean of its divisors is an integer number (67662036).

Almost surely, 2^225540115 is an apocalyptic number.

225540115 is a deficient number, since it is larger than the sum of its proper divisors (45108029).

225540115 is an equidigital number, since it uses as much as digits as its factorization.

225540115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45108028.

The product of its (nonzero) digits is 2000, while the sum is 25.

The square root of 225540115 is about 15017.9930416817. The cubic root of 225540115 is about 608.7064904315.

Adding to 225540115 its reverse (511045522), we get a palindrome (736585637).

The spelling of 225540115 in words is "two hundred twenty-five million, five hundred forty thousand, one hundred fifteen".