12425277840 has 160 divisors (see below), whose sum is σ = 39785489280. Its totient is φ = 3205435392.

The previous prime is 12425277797. The next prime is 12425277841. The reversal of 12425277840 is 4877252421.

It is a junction number, because it is equal to n+sod(n) for n = 12425277792 and 12425277801.

It is not an unprimeable number, because it can be changed into a prime (12425277841) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1585612 + ... + 1593428.

It is an arithmetic number, because the mean of its divisors is an integer number (248659308).

Almost surely, 2^12425277840 is an apocalyptic number.

12425277840 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 12425277840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19892744640).

12425277840 is an abundant number, since it is smaller than the sum of its proper divisors (27360211440).

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

12425277840 is a wasteful number, since it uses less digits than its factorization.

12425277840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8049 (or 8043 counting only the distinct ones).

The product of its (nonzero) digits is 250880, while the sum is 42.

The spelling of 12425277840 in words is "twelve billion, four hundred twenty-five million, two hundred seventy-seven thousand, eight hundred forty".