135769225 has 24 divisors (see below), whose sum is σ = 181213848. Its totient is φ = 100531200.

The previous prime is 135769219. The next prime is 135769237. The reversal of 135769225 is 522967531.

It can be written as a sum of positive squares in 12 ways, for example, as 30173049 + 105596176 = 5493^2 + 10276^2 .

It is not a de Polignac number, because 135769225 - 2⁹ = 135768713 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 23307 + ... + 28543.

It is an arithmetic number, because the mean of its divisors is an integer number (7550577).

Almost surely, 2^135769225 is an apocalyptic number.

It is an amenable number.

135769225 is a deficient number, since it is larger than the sum of its proper divisors (45444623).

135769225 is a wasteful number, since it uses less digits than its factorization.

135769225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5325 (or 5320 counting only the distinct ones).

The product of its digits is 113400, while the sum is 40.

The square root of 135769225 is about 11652.0051922405. The cubic root of 135769225 is about 513.9652772196.

It can be divided in two parts, 13576 and 9225, that added together give a square (22801 = 151²).

The spelling of 135769225 in words is "one hundred thirty-five million, seven hundred sixty-nine thousand, two hundred twenty-five".