135122445225 has 18 divisors (see below), whose sum is σ = 242019313406. Its totient is φ = 72065304000.

The previous prime is 135122445197. The next prime is 135122445253. The reversal of 135122445225 is 522544221531.

135122445225 is a `hidden beast` number, since 1 + 3 + 5 + 122 + 4 + 4 + 522 + 5 = 666.

It is an interprime number because it is at equal distance from previous prime (135122445197) and next prime (135122445253).

It can be written as a sum of positive squares in 3 ways, for example, as 19410898329 + 115711546896 = 139323^2 + 340164^2 .

It is not a de Polignac number, because 135122445225 - 2¹⁰ = 135122444201 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 135122445225.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 300271876 + ... + 300272325.

Almost surely, 2^135122445225 is an apocalyptic number.

135122445225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

135122445225 is a deficient number, since it is larger than the sum of its proper divisors (106896868181).

135122445225 is a wasteful number, since it uses less digits than its factorization.

135122445225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 600544217 (or 600544209 counting only the distinct ones).

The product of its digits is 96000, while the sum is 36.

Adding to 135122445225 its reverse (522544221531), we get a palindrome (657666666756).

The spelling of 135122445225 in words is "one hundred thirty-five billion, one hundred twenty-two million, four hundred forty-five thousand, two hundred twenty-five".