25321859712 has 192 divisors, whose sum is σ = 75863642400. Its totient is φ = 8407286784.

The previous prime is 25321859711. The next prime is 25321859713. The reversal of 25321859712 is 21795812352.

25321859712 is a `hidden beast` number, since 2 + 5 + 32 + 18 + 597 + 12 = 666.

It is an interprime number because it is at equal distance from previous prime (25321859711) and next prime (25321859713).

It is a tau number, because it is divible by the number of its divisors (192).

It is not an unprimeable number, because it can be changed into a prime (25321859711) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8614339 + ... + 8617277.

Almost surely, 2^25321859712 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 25321859712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37931821200).

25321859712 is an abundant number, since it is smaller than the sum of its proper divisors (50541782688).

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

25321859712 is an equidigital number, since it uses as much as digits as its factorization.

25321859712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3245 (or 3221 counting only the distinct ones).

The product of its digits is 302400, while the sum is 45.

The spelling of 25321859712 in words is "twenty-five billion, three hundred twenty-one million, eight hundred fifty-nine thousand, seven hundred twelve".