25534744579488 has 192 divisors, whose sum is σ = 69398038241280. Its totient is φ = 8212395340800.

The previous prime is 25534744579453. The next prime is 25534744579499. The reversal of 25534744579488 is 88497544743552.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1394493853 + ... + 1394512163.

It is an arithmetic number, because the mean of its divisors is an integer number (361448115840).

Almost surely, 2^{25534744579488} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25534744579488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34699019120640).

25534744579488 is an abundant number, since it is smaller than the sum of its proper divisors (43863293661792).

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

25534744579488 is a wasteful number, since it uses less digits than its factorization.

25534744579488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19731 (or 19723 counting only the distinct ones).

The product of its digits is 5419008000, while the sum is 75.

The spelling of 25534744579488 in words is "twenty-five trillion, five hundred thirty-four billion, seven hundred forty-four million, five hundred seventy-nine thousand, four hundred eighty-eight".