25691141984 has 96 divisors (see below), whose sum is σ = 52222060800. Its totient is φ = 12436250112.

The previous prime is 25691141869. The next prime is 25691142073. The reversal of 25691141984 is 48914119652.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55012919 + ... + 55013385.

It is an arithmetic number, because the mean of its divisors is an integer number (543979800).

Almost surely, 2^25691141984 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 25691141984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26111030400).

25691141984 is an abundant number, since it is smaller than the sum of its proper divisors (26530918816).

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

25691141984 is a wasteful number, since it uses less digits than its factorization.

25691141984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 892 (or 884 counting only the distinct ones).

The product of its digits is 622080, while the sum is 50.

The spelling of 25691141984 in words is "twenty-five billion, six hundred ninety-one million, one hundred forty-one thousand, nine hundred eighty-four".