25277807708940 has 192 divisors, whose sum is σ = 75670846175232. Its totient is φ = 6289220044800.

The previous prime is 25277807708861. The next prime is 25277807708947. The reversal of 25277807708940 is 4980770877252.

It is not an unprimeable number, because it can be changed into a prime (25277807708947) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 319807225 + ... + 319886255.

It is an arithmetic number, because the mean of its divisors is an integer number (394118990496).

Almost surely, 2^{25277807708940} is an apocalyptic number.

25277807708940 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 25277807708940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37835423087616).

25277807708940 is an abundant number, since it is smaller than the sum of its proper divisors (50393038466292).

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

25277807708940 is a wasteful number, since it uses less digits than its factorization.

25277807708940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84760 (or 84758 counting only the distinct ones).

The product of its (nonzero) digits is 110638080, while the sum is 66.

The spelling of 25277807708940 in words is "twenty-five trillion, two hundred seventy-seven billion, eight hundred seven million, seven hundred eight thousand, nine hundred forty".