225724320115 has 16 divisors (see below), whose sum is σ = 312304298688. Its totient is φ = 153412632576.

The previous prime is 225724320113. The next prime is 225724320121. The reversal of 225724320115 is 511023427522.

It is not a de Polignac number, because 225724320115 - 2¹ = 225724320113 is a prime.

It is a super-2 number, since 2×225724320115² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (225724320113) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28532622 + ... + 28540531.

It is an arithmetic number, because the mean of its divisors is an integer number (19519018668).

Almost surely, 2^225724320115 is an apocalyptic number.

225724320115 is a deficient number, since it is larger than the sum of its proper divisors (86579978573).

225724320115 is a wasteful number, since it uses less digits than its factorization.

225724320115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57073278.

The product of its (nonzero) digits is 33600, while the sum is 34.

Adding to 225724320115 its reverse (511023427522), we get a palindrome (736747747637).

The spelling of 225724320115 in words is "two hundred twenty-five billion, seven hundred twenty-four million, three hundred twenty thousand, one hundred fifteen".