25163323641 has 12 divisors (see below), whose sum is σ = 37233536340. Its totient is φ = 16366389120.

The previous prime is 25163323621. The next prime is 25163323651. The reversal of 25163323641 is 14632336152.

25163323641 is a `hidden beast` number, since 2 + 5 + 1 + 6 + 3 + 3 + 2 + 3 + 641 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 7872125625 + 17291198016 = 88725^2 + 131496^2 .

It is not a de Polignac number, because 25163323641 - 2⁵ = 25163323609 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25163323596 and 25163323605.

It is not an unprimeable number, because it can be changed into a prime (25163323621) 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 11 ways as a sum of consecutive naturals, for example, 34096276 + ... + 34097013.

It is an arithmetic number, because the mean of its divisors is an integer number (3102794695).

Almost surely, 2^25163323641 is an apocalyptic number.

It is an amenable number.

25163323641 is a deficient number, since it is larger than the sum of its proper divisors (12070212699).

25163323641 is a wasteful number, since it uses less digits than its factorization.

25163323641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68193336 (or 68193333 counting only the distinct ones).

The product of its digits is 77760, while the sum is 36.

Adding to 25163323641 its reverse (14632336152), we get a palindrome (39795659793).

The spelling of 25163323641 in words is "twenty-five billion, one hundred sixty-three million, three hundred twenty-three thousand, six hundred forty-one".