12925485440 has 128 divisors (see below), whose sum is σ = 35386182720. Its totient is φ = 4422574080.

The previous prime is 12925485437. The next prime is 12925485449. The reversal of 12925485440 is 4458452921.

It is a tau number, because it is divible by the number of its divisors (128).

It is a junction number, because it is equal to n+sod(n) for n = 12925485391 and 12925485400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12925485449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2421014 + ... + 2426346.

Almost surely, 2^12925485440 is an apocalyptic number.

12925485440 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 12925485440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17693091360).

12925485440 is an abundant number, since it is smaller than the sum of its proper divisors (22460697280).

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

12925485440 is an equidigital number, since it uses as much as digits as its factorization.

12925485440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5900 (or 5888 counting only the distinct ones).

The product of its (nonzero) digits is 460800, while the sum is 44.

The spelling of 12925485440 in words is "twelve billion, nine hundred twenty-five million, four hundred eighty-five thousand, four hundred forty".