135222125 has 8 divisors (see below), whose sum is σ = 168757368. Its totient is φ = 108177600.

The previous prime is 135222103. The next prime is 135222181. The reversal of 135222125 is 521222531.

135222125 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 4 ways, for example, as 18992164 + 116229961 = 4358^2 + 10781^2 .

It is not a de Polignac number, because 135222125 - 2⁸ = 135221869 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 135222125.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 540764 + ... + 541013.

It is an arithmetic number, because the mean of its divisors is an integer number (21094671).

Almost surely, 2^135222125 is an apocalyptic number.

It is an amenable number.

135222125 is a deficient number, since it is larger than the sum of its proper divisors (33535243).

135222125 is an equidigital number, since it uses as much as digits as its factorization.

135222125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1081792 (or 1081782 counting only the distinct ones).

The product of its digits is 1200, while the sum is 23.

The square root of 135222125 is about 11628.5048480017. The cubic root of 135222125 is about 513.2739842089.

Adding to 135222125 its reverse (521222531), we get a palindrome (656444656).

The spelling of 135222125 in words is "one hundred thirty-five million, two hundred twenty-two thousand, one hundred twenty-five".