36561531371525 has 6 divisors (see below), whose sum is σ = 45336298900722. Its totient is φ = 29249225097200.

The previous prime is 36561531371509. The next prime is 36561531371537. The reversal of 36561531371525 is 52517313516563.

It can be written as a sum of positive squares in 3 ways, for example, as 1256948172769 + 35304583198756 = 1121137^2 + 5941766^2 .

It is not a de Polignac number, because 36561531371525 - 2⁴ = 36561531371509 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 731230627406 + ... + 731230627455.

It is an arithmetic number, because the mean of its divisors is an integer number (7556049816787).

Almost surely, 2^{36561531371525} is an apocalyptic number.

It is an amenable number.

36561531371525 is a deficient number, since it is larger than the sum of its proper divisors (8774767529197).

36561531371525 is a wasteful number, since it uses less digits than its factorization.

36561531371525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1462461254871 (or 1462461254866 counting only the distinct ones).

The product of its digits is 8505000, while the sum is 53.

The spelling of 36561531371525 in words is "thirty-six trillion, five hundred sixty-one billion, five hundred thirty-one million, three hundred seventy-one thousand, five hundred twenty-five".