25543241022321 has 24 divisors (see below), whose sum is σ = 40250139852000. Its totient is φ = 15480681249600.

The previous prime is 25543241022251. The next prime is 25543241022347. The reversal of 25543241022321 is 12322014234552.

25543241022321 is a `hidden beast` number, since 2 + 5 + 5 + 4 + 3 + 2 + 410 + 2 + 232 + 1 = 666.

It is not a de Polignac number, because 25543241022321 - 2²⁹ = 25542704151409 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (25543241022361) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 28181805 + ... + 29074053.

It is an arithmetic number, because the mean of its divisors is an integer number (1677089160500).

Almost surely, 2^{25543241022321} is an apocalyptic number.

It is an amenable number.

25543241022321 is a deficient number, since it is larger than the sum of its proper divisors (14706898829679).

25543241022321 is a wasteful number, since it uses less digits than its factorization.

25543241022321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1181437 (or 1181434 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 36.

Adding to 25543241022321 its reverse (12322014234552), we get a palindrome (37865255256873).

The spelling of 25543241022321 in words is "twenty-five trillion, five hundred forty-three billion, two hundred forty-one million, twenty-two thousand, three hundred twenty-one".