25970807808 has 264 divisors, whose sum is σ = 82224158016. Its totient is φ = 7829913600.

The previous prime is 25970807801. The next prime is 25970807827. The reversal of 25970807808 is 80870807952.

It is a tau number, because it is divible by the number of its divisors (264).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25970807801) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24431085 + ... + 24432147.

It is an arithmetic number, because the mean of its divisors is an integer number (311455144).

Almost surely, 2^25970807808 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 25970807808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41112079008).

25970807808 is an abundant number, since it is smaller than the sum of its proper divisors (56253350208).

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

25970807808 is a wasteful number, since it uses less digits than its factorization.

25970807808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1341 (or 1320 counting only the distinct ones).

The product of its (nonzero) digits is 2257920, while the sum is 54.

The spelling of 25970807808 in words is "twenty-five billion, nine hundred seventy million, eight hundred seven thousand, eight hundred eight".