135565333261025 has 6 divisors (see below), whose sum is σ = 168101013243702. Its totient is φ = 108452266608800.

The previous prime is 135565333261003. The next prime is 135565333261031. The reversal of 135565333261025 is 520162333565531.

It can be written as a sum of positive squares in 3 ways, for example, as 25699130663761 + 109866202597264 = 5069431^2 + 10481708^2 .

It is not a de Polignac number, because 135565333261025 - 2¹² = 135565333256929 is a prime.

It is a Duffinian number.

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, 2711306665196 + ... + 2711306665245.

It is an arithmetic number, because the mean of its divisors is an integer number (28016835540617).

Almost surely, 2^{135565333261025} is an apocalyptic number.

It is an amenable number.

135565333261025 is a deficient number, since it is larger than the sum of its proper divisors (32535679982677).

135565333261025 is an equidigital number, since it uses as much as digits as its factorization.

135565333261025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5422613330451 (or 5422613330446 counting only the distinct ones).

The product of its (nonzero) digits is 7290000, while the sum is 50.

The spelling of 135565333261025 in words is "one hundred thirty-five trillion, five hundred sixty-five billion, three hundred thirty-three million, two hundred sixty-one thousand, twenty-five".