25641311396 has 12 divisors (see below), whose sum is σ = 44875835340. Its totient is φ = 12819644160.

The previous prime is 25641311383. The next prime is 25641311459. The reversal of 25641311396 is 69311314652.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 5572622500 + 20068688896 = 74650^2 + 141664^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 194345 + ... + 298416.

It is an arithmetic number, because the mean of its divisors is an integer number (3739652945).

Almost surely, 2^25641311396 is an apocalyptic number.

It is an amenable number.

25641311396 is a deficient number, since it is larger than the sum of its proper divisors (19234523944).

25641311396 is a wasteful number, since it uses less digits than its factorization.

25641311396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 505774 (or 505772 counting only the distinct ones).

The product of its digits is 116640, while the sum is 41.

The spelling of 25641311396 in words is "twenty-five billion, six hundred forty-one million, three hundred eleven thousand, three hundred ninety-six".