25643483712 has 448 divisors, whose sum is σ = 97036615680. Its totient is φ = 6444748800.

The previous prime is 25643483693. The next prime is 25643483797. The reversal of 25643483712 is 21738434652.

25643483712 is a `hidden beast` number, since 2 + 564 + 3 + 4 + 83 + 7 + 1 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (448).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4121628 + ... + 4127844.

Almost surely, 2^25643483712 is an apocalyptic number.

25643483712 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25643483712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48518307840).

25643483712 is an abundant number, since it is smaller than the sum of its proper divisors (71393131968).

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

25643483712 is a wasteful number, since it uses less digits than its factorization.

25643483712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6287 (or 6271 counting only the distinct ones).

The product of its digits is 967680, while the sum is 45.

The spelling of 25643483712 in words is "twenty-five billion, six hundred forty-three million, four hundred eighty-three thousand, seven hundred twelve".