225646135 has 16 divisors (see below), whose sum is σ = 318114720. Its totient is φ = 151482240.

The previous prime is 225646133. The next prime is 225646177. The reversal of 225646135 is 531646522.

It is not a de Polignac number, because 225646135 - 2¹ = 225646133 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 225646135.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225646133) 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, 157080 + ... + 158509.

It is an arithmetic number, because the mean of its divisors is an integer number (19882170).

Almost surely, 2^225646135 is an apocalyptic number.

225646135 is a deficient number, since it is larger than the sum of its proper divisors (92468585).

225646135 is a wasteful number, since it uses less digits than its factorization.

225646135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315618.

The product of its digits is 43200, while the sum is 34.

The square root of 225646135 is about 15021.5223928868. The cubic root of 225646135 is about 608.8018540326.

The spelling of 225646135 in words is "two hundred twenty-five million, six hundred forty-six thousand, one hundred thirty-five".