225135145 has 8 divisors (see below), whose sum is σ = 270474120. Its totient is φ = 179900160.

The previous prime is 225135137. The next prime is 225135173. The reversal of 225135145 is 541531522.

225135145 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 40908816 + 184226329 = 6396^2 + 13573^2 .

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

It is not a de Polignac number, because 225135145 - 2³ = 225135137 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21150 + ... + 29959.

It is an arithmetic number, because the mean of its divisors is an integer number (33809265).

Almost surely, 2^225135145 is an apocalyptic number.

It is an amenable number.

225135145 is a deficient number, since it is larger than the sum of its proper divisors (45338975).

225135145 is an equidigital number, since it uses as much as digits as its factorization.

225135145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51995.

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

The square root of 225135145 is about 15004.5041570856. The cubic root of 225135145 is about 608.3419498790.

Adding to 225135145 its reverse (541531522), we get a palindrome (766666667).

The spelling of 225135145 in words is "two hundred twenty-five million, one hundred thirty-five thousand, one hundred forty-five".