25911797448 has 32 divisors (see below), whose sum is σ = 65153952000. Its totient is φ = 8587338048.

The previous prime is 25911797437. The next prime is 25911797449. The reversal of 25911797448 is 84479711952.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (25911797449) 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, 3116248 + ... + 3124551.

It is an arithmetic number, because the mean of its divisors is an integer number (2036061000).

Almost surely, 2^25911797448 is an apocalyptic number.

It is an amenable number.

25911797448 is an abundant number, since it is smaller than the sum of its proper divisors (39242154552).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25911797448 is a wasteful number, since it uses less digits than its factorization.

25911797448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6240981 (or 6240977 counting only the distinct ones).

The product of its digits is 5080320, while the sum is 57.

The spelling of 25911797448 in words is "twenty-five billion, nine hundred eleven million, seven hundred ninety-seven thousand, four hundred forty-eight".