135512225 has 12 divisors (see below), whose sum is σ = 168231420. Its totient is φ = 108283200.

The previous prime is 135512213. The next prime is 135512231. The reversal of 135512225 is 522215531.

It can be written as a sum of positive squares in 6 ways, for example, as 27164944 + 108347281 = 5212^2 + 10409^2 .

It is not a de Polignac number, because 135512225 - 2¹⁸ = 135250081 is a prime.

It is a hoax number, since the sum of its digits (26) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 135512194 and 135512203.

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, 22871 + ... + 28179.

It is an arithmetic number, because the mean of its divisors is an integer number (14019285).

Almost surely, 2^135512225 is an apocalyptic number.

It is an amenable number.

135512225 is a deficient number, since it is larger than the sum of its proper divisors (32719195).

135512225 is a wasteful number, since it uses less digits than its factorization.

135512225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6340 (or 6335 counting only the distinct ones).

The product of its digits is 3000, while the sum is 26.

The square root of 135512225 is about 11640.9718236924. The cubic root of 135512225 is about 513.6407743518.

Adding to 135512225 its reverse (522215531), we get a palindrome (657727756).

The spelling of 135512225 in words is "one hundred thirty-five million, five hundred twelve thousand, two hundred twenty-five".