25779697752 has 96 divisors (see below), whose sum is σ = 68228697600. Its totient is φ = 8115252288.

The previous prime is 25779697733. The next prime is 25779697763.

25779697752 is nontrivially palindromic in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 990133 + ... + 1015835.

It is an arithmetic number, because the mean of its divisors is an integer number (710715600).

Almost surely, 2^25779697752 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 25779697752, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34114348800).

25779697752 is an abundant number, since it is smaller than the sum of its proper divisors (42448999848).

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

25779697752 is a wasteful number, since it uses less digits than its factorization.

25779697752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25837 (or 25810 counting only the distinct ones).

The product of its digits is 116688600, while the sum is 66.

The spelling of 25779697752 in words is "twenty-five billion, seven hundred seventy-nine million, six hundred ninety-seven thousand, seven hundred fifty-two".