25311116432144 has 20 divisors (see below), whose sum is σ = 49040880255324. Its totient is φ = 12655405398528.

The previous prime is 25311116432141. The next prime is 25311116432171. The reversal of 25311116432144 is 44123461111352.

It can be written as a sum of positive squares in 2 ways, for example, as 6848626192144 + 18462490240000 = 2616988^2 + 4296800^2 .

It is a junction number, because it is equal to n+sod(n) for n = 25311116432098 and 25311116432107.

It is not an unprimeable number, because it can be changed into a prime (25311116432141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8178677 + ... + 10840340.

Almost surely, 2^{25311116432144} is an apocalyptic number.

It is an amenable number.

25311116432144 is a deficient number, since it is larger than the sum of its proper divisors (23729763823180).

25311116432144 is a wasteful number, since it uses less digits than its factorization.

25311116432144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19102202 (or 19102196 counting only the distinct ones).

The product of its digits is 69120, while the sum is 38.

Adding to 25311116432144 its reverse (44123461111352), we get a palindrome (69434577543496).

The spelling of 25311116432144 in words is "twenty-five trillion, three hundred eleven billion, one hundred sixteen million, four hundred thirty-two thousand, one hundred forty-four".