225315145 has 16 divisors (see below), whose sum is σ = 297289728. Its totient is φ = 162570240.

The previous prime is 225315109. The next prime is 225315149. The reversal of 225315145 is 541513522.

It is not a de Polignac number, because 225315145 - 2⁷ = 225315017 is a prime.

It is not an unprimeable number, because it can be changed into a prime (225315149) 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 15 ways as a sum of consecutive naturals, for example, 9144 + ... + 23113.

It is an arithmetic number, because the mean of its divisors is an integer number (18580608).

Almost surely, 2^225315145 is an apocalyptic number.

It is an amenable number.

225315145 is a deficient number, since it is larger than the sum of its proper divisors (71974583).

225315145 is a wasteful number, since it uses less digits than its factorization.

225315145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32400.

The product of its digits is 6000, while the sum is 28.

The square root of 225315145 is about 15010.5011575230. The cubic root of 225315145 is about 608.5040338294.

Adding to 225315145 its reverse (541513522), we get a palindrome (766828667).

The spelling of 225315145 in words is "two hundred twenty-five million, three hundred fifteen thousand, one hundred forty-five".