25543311110401 has 8 divisors (see below), whose sum is σ = 29450694985344. Its totient is φ = 21700512093120.

The previous prime is 25543311110371. The next prime is 25543311110461. The reversal of 25543311110401 is 10401111334552.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 25543311110401 - 2⁹ = 25543311109889 is a prime.

It is a super-2 number, since 2×25543311110401² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25543311110461) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16146213565 + ... + 16146215146.

It is an arithmetic number, because the mean of its divisors is an integer number (3681336873168).

Almost surely, 2^{25543311110401} is an apocalyptic number.

It is an amenable number.

25543311110401 is a deficient number, since it is larger than the sum of its proper divisors (3907383874943).

25543311110401 is a wasteful number, since it uses less digits than its factorization.

25543311110401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32292428831.

The product of its (nonzero) digits is 7200, while the sum is 31.

Adding to 25543311110401 its reverse (10401111334552), we get a palindrome (35944422444953).

The spelling of 25543311110401 in words is "twenty-five trillion, five hundred forty-three billion, three hundred eleven million, one hundred ten thousand, four hundred one".