135522225 has 18 divisors (see below), whose sum is σ = 242735766. Its totient is φ = 72278400.

The previous prime is 135522217. The next prime is 135522271. The reversal of 135522225 is 522225531.

135522225 is a `hidden beast` number, since 135 + 522 + 2 + 2 + 5 = 666.

135522225 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 3 ways, for example, as 242064 + 135280161 = 492^2 + 11631^2 .

It is not a de Polignac number, because 135522225 - 2³ = 135522217 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 300936 + ... + 301385.

Almost surely, 2^135522225 is an apocalyptic number.

135522225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

135522225 is a deficient number, since it is larger than the sum of its proper divisors (107213541).

135522225 is a wasteful number, since it uses less digits than its factorization.

135522225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 602337 (or 602329 counting only the distinct ones).

The product of its digits is 6000, while the sum is 27.

The square root of 135522225 is about 11641.4013331729. The cubic root of 135522225 is about 513.6534085905.

Adding to 135522225 its reverse (522225531), we get a palindrome (657747756).

The spelling of 135522225 in words is "one hundred thirty-five million, five hundred twenty-two thousand, two hundred twenty-five".