135551225 has 24 divisors (see below), whose sum is σ = 178307040. Its totient is φ = 101934720.

The previous prime is 135551203. The next prime is 135551231. The reversal of 135551225 is 522155531.

It is not a de Polignac number, because 135551225 - 2⁶ = 135551161 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 64034 + ... + 66116.

It is an arithmetic number, because the mean of its divisors is an integer number (7429460).

Almost surely, 2^135551225 is an apocalyptic number.

It is an amenable number.

135551225 is a deficient number, since it is larger than the sum of its proper divisors (42755815).

135551225 is a wasteful number, since it uses less digits than its factorization.

135551225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2249 (or 2244 counting only the distinct ones).

The product of its digits is 7500, while the sum is 29.

The square root of 135551225 is about 11642.6468210626. The cubic root of 135551225 is about 513.6900443686.

The spelling of 135551225 in words is "one hundred thirty-five million, five hundred fifty-one thousand, two hundred twenty-five".