25396718880 has 288 divisors, whose sum is σ = 91525944384. Its totient is φ = 5883346944.

The previous prime is 25396718827. The next prime is 25396718911. The reversal of 25396718880 is 8881769352.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 25396718880.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1796319 + ... + 1810401.

It is an arithmetic number, because the mean of its divisors is an integer number (317798418).

Almost surely, 2^25396718880 is an apocalyptic number.

25396718880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25396718880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45762972192).

25396718880 is an abundant number, since it is smaller than the sum of its proper divisors (66129225504).

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

25396718880 is a wasteful number, since it uses less digits than its factorization.

25396718880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14148 (or 14123 counting only the distinct ones).

The product of its (nonzero) digits is 5806080, while the sum is 57.

The spelling of 25396718880 in words is "twenty-five billion, three hundred ninety-six million, seven hundred eighteen thousand, eight hundred eighty".