25768522368 has 96 divisors (see below), whose sum is σ = 74440990260. Its totient is φ = 8555986944.

The previous prime is 25768522363. The next prime is 25768522379. The reversal of 25768522368 is 86322586752.

It is a happy number.

25768522368 is a `hidden beast` number, since 2 + 57 + 6 + 8 + 522 + 3 + 68 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 25725593664 + 42928704 = 160392^2 + 6552^2 .

It is a tau number, because it is divible by the number of its divisors (96).

It is not an unprimeable number, because it can be changed into a prime (25768522363) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 252546 + ... + 339582.

Almost surely, 2^25768522368 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 25768522368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37220495130).

25768522368 is an abundant number, since it is smaller than the sum of its proper divisors (48672467892).

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

25768522368 is a wasteful number, since it uses less digits than its factorization.

25768522368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87314 (or 87299 counting only the distinct ones).

The product of its digits is 9676800, while the sum is 54.

The spelling of 25768522368 in words is "twenty-five billion, seven hundred sixty-eight million, five hundred twenty-two thousand, three hundred sixty-eight".