11555542020325 has 6 divisors (see below), whose sum is σ = 14328872105234. Its totient is φ = 9244433616240.

The previous prime is 11555542020301. The next prime is 11555542020443. The reversal of 11555542020325 is 52302024555511.

It can be written as a sum of positive squares in 3 ways, for example, as 644722278916 + 10910819741409 = 802946^2 + 3303153^2 .

It is not a de Polignac number, because 11555542020325 - 2¹⁵ = 11555541987557 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 (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 231110840382 + ... + 231110840431.

Almost surely, 2^{11555542020325} is an apocalyptic number.

It is an amenable number.

11555542020325 is a deficient number, since it is larger than the sum of its proper divisors (2773330084909).

11555542020325 is an equidigital number, since it uses as much as digits as its factorization.

11555542020325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 462221680823 (or 462221680818 counting only the distinct ones).

The product of its (nonzero) digits is 300000, while the sum is 40.

Adding to 11555542020325 its reverse (52302024555511), we get a palindrome (63857566575836).

The spelling of 11555542020325 in words is "eleven trillion, five hundred fifty-five billion, five hundred forty-two million, twenty thousand, three hundred twenty-five".