135515345225 has 12 divisors (see below), whose sum is σ = 180965107596. Its totient is φ = 100072870080.

The previous prime is 135515345197. The next prime is 135515345261. The reversal of 135515345225 is 522543515531.

It can be written as a sum of positive squares in 6 ways, for example, as 46637425849 + 88877919376 = 215957^2 + 298124^2 .

It is not a de Polignac number, because 135515345225 - 2⁸ = 135515344969 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 208484822 + ... + 208485471.

It is an arithmetic number, because the mean of its divisors is an integer number (15080425633).

Almost surely, 2^135515345225 is an apocalyptic number.

It is an amenable number.

135515345225 is a deficient number, since it is larger than the sum of its proper divisors (45449762371).

135515345225 is a wasteful number, since it uses less digits than its factorization.

135515345225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 416970316 (or 416970311 counting only the distinct ones).

The product of its digits is 450000, while the sum is 41.

The spelling of 135515345225 in words is "one hundred thirty-five billion, five hundred fifteen million, three hundred forty-five thousand, two hundred twenty-five".