135628225 has 24 divisors (see below), whose sum is σ = 171676512. Its totient is φ = 106272000.

The previous prime is 135628223. The next prime is 135628231. The reversal of 135628225 is 522826531.

It is not a de Polignac number, because 135628225 - 2¹ = 135628223 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135628223) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 338025 + ... + 338425.

It is an arithmetic number, because the mean of its divisors is an integer number (7153188).

Almost surely, 2^135628225 is an apocalyptic number.

It is an amenable number.

135628225 is a deficient number, since it is larger than the sum of its proper divisors (36048287).

135628225 is a wasteful number, since it uses less digits than its factorization.

135628225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 657 (or 652 counting only the distinct ones).

The product of its digits is 28800, while the sum is 34.

The square root of 135628225 is about 11645.9531597890. The cubic root of 135628225 is about 513.7872933266.

The spelling of 135628225 in words is "one hundred thirty-five million, six hundred twenty-eight thousand, two hundred twenty-five".