135232225 has 12 divisors (see below), whose sum is σ = 172221244. Its totient is φ = 105261120.

The previous prime is 135232213. The next prime is 135232247. The reversal of 135232225 is 522232531.

135232225 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 6 ways, for example, as 2729104 + 132503121 = 1652^2 + 11511^2 .

It is not a de Polignac number, because 135232225 - 2⁵ = 135232193 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 135232225.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 72174 + ... + 74023.

Almost surely, 2^135232225 is an apocalyptic number.

It is an amenable number.

135232225 is a deficient number, since it is larger than the sum of its proper divisors (36989019).

135232225 is a wasteful number, since it uses less digits than its factorization.

135232225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146244 (or 146239 counting only the distinct ones).

The product of its digits is 3600, while the sum is 25.

The square root of 135232225 is about 11628.9391175636. The cubic root of 135232225 is about 513.2867630303.

Adding to 135232225 its reverse (522232531), we get a palindrome (657464756).

The spelling of 135232225 in words is "one hundred thirty-five million, two hundred thirty-two thousand, two hundred twenty-five".