12425205440 has 56 divisors (see below), whose sum is σ = 30607802640. Its totient is φ = 4798696448.

The previous prime is 12425205437. The next prime is 12425205451. The reversal of 12425205440 is 4450252421.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 660182 + ... + 678741.

Almost surely, 2^12425205440 is an apocalyptic number.

12425205440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12425205440 is an abundant number, since it is smaller than the sum of its proper divisors (18182597200).

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

12425205440 is a wasteful number, since it uses less digits than its factorization.

12425205440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1338969 (or 1338959 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 29.

Adding to 12425205440 its reverse (4450252421), we get a palindrome (16875457861).

The spelling of 12425205440 in words is "twelve billion, four hundred twenty-five million, two hundred five thousand, four hundred forty".