12025881784 has 64 divisors (see below), whose sum is σ = 26644536000. Its totient is φ = 4980870144.

The previous prime is 12025881779. The next prime is 12025881797. The reversal of 12025881784 is 48718852021.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 289252 + ... + 328204.

It is an arithmetic number, because the mean of its divisors is an integer number (416320875).

Almost surely, 2^12025881784 is an apocalyptic number.

12025881784 is a gapful number since it is divisible by the number (14) 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 12025881784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13322268000).

12025881784 is an abundant number, since it is smaller than the sum of its proper divisors (14618654216).

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

12025881784 is a wasteful number, since it uses less digits than its factorization.

12025881784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39152 (or 39148 counting only the distinct ones).

The product of its (nonzero) digits is 286720, while the sum is 46.

The spelling of 12025881784 in words is "twelve billion, twenty-five million, eight hundred eighty-one thousand, seven hundred eighty-four".