25321216896 has 160 divisors (see below), whose sum is σ = 77194766880. Its totient is φ = 8234403840.

The previous prime is 25321216891. The next prime is 25321216901. The reversal of 25321216896 is 69861212352.

25321216896 is a `hidden beast` number, since 2 + 532 + 1 + 21 + 6 + 8 + 96 = 666.

It is an interprime number because it is at equal distance from previous prime (25321216891) and next prime (25321216901).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25321216891) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 395305 + ... + 454871.

It is an arithmetic number, because the mean of its divisors is an integer number (482467293).

Almost surely, 2^25321216896 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 25321216896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38597383440).

25321216896 is an abundant number, since it is smaller than the sum of its proper divisors (51873549984).

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

25321216896 is an equidigital number, since it uses as much as digits as its factorization.

25321216896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59634 (or 59613 counting only the distinct ones).

The product of its digits is 311040, while the sum is 45.

The spelling of 25321216896 in words is "twenty-five billion, three hundred twenty-one million, two hundred sixteen thousand, eight hundred ninety-six".