1125350163565 has 32 divisors (see below), whose sum is σ = 1477693971936. Its totient is φ = 819340247040.

The previous prime is 1125350163523. The next prime is 1125350163593. The reversal of 1125350163565 is 5653610535211.

It can be written as a sum of positive squares in 16 ways, for example, as 353898871236 + 771451292329 = 594894^2 + 878323^2 .

It is not a de Polignac number, because 1125350163565 - 2⁷ = 1125350163437 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1035012 + ... + 1822621.

It is an arithmetic number, because the mean of its divisors is an integer number (46177936623).

Almost surely, 2^{1125350163565} is an apocalyptic number.

It is an amenable number.

1125350163565 is a deficient number, since it is larger than the sum of its proper divisors (352343808371).

1125350163565 is a wasteful number, since it uses less digits than its factorization.

1125350163565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2857809.

The product of its (nonzero) digits is 405000, while the sum is 43.

Adding to 1125350163565 its reverse (5653610535211), we get a palindrome (6778960698776).

The spelling of 1125350163565 in words is "one trillion, one hundred twenty-five billion, three hundred fifty million, one hundred sixty-three thousand, five hundred sixty-five".