25396322688 has 384 divisors, whose sum is σ = 83315232000. Its totient is φ = 7636654080.

The previous prime is 25396322683. The next prime is 25396322701. The reversal of 25396322688 is 88622369352.

25396322688 is a `hidden beast` number, since 2 + 539 + 6 + 3 + 2 + 26 + 88 = 666.

It is a tau number, because it is divible by the number of its divisors (384).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25396322683) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 68086470 + ... + 68086842.

It is an arithmetic number, because the mean of its divisors is an integer number (216966750).

Almost surely, 2^25396322688 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 25396322688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41657616000).

25396322688 is an abundant number, since it is smaller than the sum of its proper divisors (57918909312).

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

25396322688 is a wasteful number, since it uses less digits than its factorization.

25396322688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 612 (or 588 counting only the distinct ones).

The product of its digits is 7464960, while the sum is 54.

The spelling of 25396322688 in words is "twenty-five billion, three hundred ninety-six million, three hundred twenty-two thousand, six hundred eighty-eight".