135042115220225 has 6 divisors (see below), whose sum is σ = 167452222873110. Its totient is φ = 108033692176160.

The previous prime is 135042115220197. The next prime is 135042115220269. The reversal of 135042115220225 is 522022511240531.

It can be written as a sum of positive squares in 3 ways, for example, as 22110835310656 + 112931279909569 = 4702216^2 + 10626913^2 .

It is not a de Polignac number, because 135042115220225 - 2¹⁴ = 135042115203841 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2700842304380 + ... + 2700842304429.

It is an arithmetic number, because the mean of its divisors is an integer number (27908703812185).

Almost surely, 2^{135042115220225} is an apocalyptic number.

It is an amenable number.

135042115220225 is a deficient number, since it is larger than the sum of its proper divisors (32410107652885).

135042115220225 is an equidigital number, since it uses as much as digits as its factorization.

135042115220225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5401684608819 (or 5401684608814 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 35.

Adding to 135042115220225 its reverse (522022511240531), we get a palindrome (657064626460756).

The spelling of 135042115220225 in words is "one hundred thirty-five trillion, forty-two billion, one hundred fifteen million, two hundred twenty thousand, two hundred twenty-five".