25501243225143 has 96 divisors (see below), whose sum is σ = 41683991012352. Its totient is φ = 13799716761600.

The previous prime is 25501243225103. The next prime is 25501243225163. The reversal of 25501243225143 is 34152234210552.

It is not a de Polignac number, because 25501243225143 - 2²⁰ = 25501242176567 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25501243225103) by changing a digit.

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 95 ways as a sum of consecutive naturals, for example, 1943537623 + ... + 1943550743.

It is an arithmetic number, because the mean of its divisors is an integer number (434208239712).

Almost surely, 2^{25501243225143} is an apocalyptic number.

25501243225143 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

25501243225143 is a deficient number, since it is larger than the sum of its proper divisors (16182747787209).

25501243225143 is a wasteful number, since it uses less digits than its factorization.

25501243225143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18845 (or 18838 counting only the distinct ones).

The product of its (nonzero) digits is 288000, while the sum is 39.

Adding to 25501243225143 its reverse (34152234210552), we get a palindrome (59653477435695).

The spelling of 25501243225143 in words is "twenty-five trillion, five hundred one billion, two hundred forty-three million, two hundred twenty-five thousand, one hundred forty-three".