225115311 has 8 divisors (see below), whose sum is σ = 301812784. Its totient is φ = 149247360.

The previous prime is 225115301. The next prime is 225115333. The reversal of 225115311 is 113511522.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 225115311 - 2⁵ = 225115279 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225115301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 206746 + ... + 207831.

It is an arithmetic number, because the mean of its divisors is an integer number (37726598).

Almost surely, 2^225115311 is an apocalyptic number.

225115311 is a deficient number, since it is larger than the sum of its proper divisors (76697473).

225115311 is a wasteful number, since it uses less digits than its factorization.

225115311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 414761.

The product of its digits is 300, while the sum is 21.

The square root of 225115311 is about 15003.8432076585. The cubic root of 225115311 is about 608.3240847450.

Adding to 225115311 its reverse (113511522), we get a palindrome (338626833).

The spelling of 225115311 in words is "two hundred twenty-five million, one hundred fifteen thousand, three hundred eleven".