25813941378056 has 16 divisors (see below), whose sum is σ = 52124304705900. Its totient is φ = 11914126789824.

The previous prime is 25813941378037. The next prime is 25813941378067. The reversal of 25813941378056 is 65087314931852.

It can be written as a sum of positive squares in 2 ways, for example, as 22687445501956 + 3126495876100 = 4763134^2 + 1768190^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 25813941378056.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 124105487291 + ... + 124105487498.

It is a 1-persistent number, because it is pandigital, but 2⋅25813941378056 = 51627882756112 is not.

Almost surely, 2^{25813941378056} is an apocalyptic number.

25813941378056 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

25813941378056 is an abundant number, since it is smaller than the sum of its proper divisors (26310363327844).

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

25813941378056 is a wasteful number, since it uses less digits than its factorization.

25813941378056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248210974808 (or 248210974804 counting only the distinct ones).

The product of its (nonzero) digits is 43545600, while the sum is 62.

The spelling of 25813941378056 in words is "twenty-five trillion, eight hundred thirteen billion, nine hundred forty-one million, three hundred seventy-eight thousand, fifty-six".