25163821056 has 416 divisors, whose sum is σ = 79489133568. Its totient is φ = 6994001920.

The previous prime is 25163821051. The next prime is 25163821091. The reversal of 25163821056 is 65012836152.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25163821051) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 107999116 + ... + 107999348.

It is an arithmetic number, because the mean of its divisors is an integer number (191079648).

Almost surely, 2^25163821056 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 25163821056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39744566784).

25163821056 is an abundant number, since it is smaller than the sum of its proper divisors (54325312512).

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

25163821056 is a wasteful number, since it uses less digits than its factorization.

25163821056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 335 (or 313 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 39.

The spelling of 25163821056 in words is "twenty-five billion, one hundred sixty-three million, eight hundred twenty-one thousand, fifty-six".