225215115 has 32 divisors (see below), whose sum is σ = 372314880. Its totient is φ = 116164224.

The previous prime is 225215077. The next prime is 225215119. The reversal of 225215115 is 511512522.

It is not a de Polignac number, because 225215115 - 2¹⁴ = 225198731 is a prime.

It is not an unprimeable number, because it can be changed into a prime (225215119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 98212 + ... + 100478.

It is an arithmetic number, because the mean of its divisors is an integer number (11634840).

Almost surely, 2^225215115 is an apocalyptic number.

225215115 is a deficient number, since it is larger than the sum of its proper divisors (147099765).

225215115 is a wasteful number, since it uses less digits than its factorization.

225215115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2491.

The product of its digits is 1000, while the sum is 24.

The square root of 225215115 is about 15007.1687869498. The cubic root of 225215115 is about 608.4139708373.

Adding to 225215115 its reverse (511512522), we get a palindrome (736727637).

The spelling of 225215115 in words is "two hundred twenty-five million, two hundred fifteen thousand, one hundred fifteen".