25380274985856 has 1536 divisors, whose sum is σ = 93926117376000. Its totient is φ = 6414371389440.

The previous prime is 25380274985773. The next prime is 25380274985893. The reversal of 25380274985856 is 65858947208352.

25380274985856 is a `hidden beast` number, since 2 + 5 + 3 + 80 + 2 + 7 + 498 + 5 + 8 + 56 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 23136075100 + ... + 23136076196.

It is an arithmetic number, because the mean of its divisors is an integer number (61149816000).

Almost surely, 2^{25380274985856} 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 25380274985856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46963058688000).

25380274985856 is an abundant number, since it is smaller than the sum of its proper divisors (68545842390144).

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

25380274985856 is a wasteful number, since it uses less digits than its factorization.

25380274985856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1340 (or 1325 counting only the distinct ones).

The product of its (nonzero) digits is 1161216000, while the sum is 72.

The spelling of 25380274985856 in words is "twenty-five trillion, three hundred eighty billion, two hundred seventy-four million, nine hundred eighty-five thousand, eight hundred fifty-six".