12025446660 has 144 divisors (see below), whose sum is σ = 37240532784. Its totient is φ = 3139928064.

The previous prime is 12025446659. The next prime is 12025446673. The reversal of 12025446660 is 6664452021.

It can be written as a sum of positive squares in 8 ways, for example, as 1458017856 + 10567428804 = 38184^2 + 102798^2 .

It is a super-2 number, since 2×12025446660² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6419484 + ... + 6421356.

It is an arithmetic number, because the mean of its divisors is an integer number (258614811).

Almost surely, 2^12025446660 is an apocalyptic number.

12025446660 is a gapful number since it is divisible by the number (10) 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 12025446660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18620266392).

12025446660 is an abundant number, since it is smaller than the sum of its proper divisors (25215086124).

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

12025446660 is a wasteful number, since it uses less digits than its factorization.

12025446660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2614 (or 2609 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

Adding to 12025446660 its reverse (6664452021), we get a palindrome (18689898681).

The spelling of 12025446660 in words is "twelve billion, twenty-five million, four hundred forty-six thousand, six hundred sixty".