12425442540 has 384 divisors, whose sum is σ = 43760640000. Its totient is φ = 2624493312.

The previous prime is 12425442487. The next prime is 12425442551. The reversal of 12425442540 is 4524452421.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 16813491 + ... + 16814229.

It is an arithmetic number, because the mean of its divisors is an integer number (113960000).

Almost surely, 2^12425442540 is an apocalyptic number.

12425442540 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 12425442540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21880320000).

12425442540 is an abundant number, since it is smaller than the sum of its proper divisors (31335197460).

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

12425442540 is a wasteful number, since it uses less digits than its factorization.

12425442540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 834 (or 818 counting only the distinct ones).

The product of its (nonzero) digits is 51200, while the sum is 33.

Adding to 12425442540 its reverse (4524452421), we get a palindrome (16949894961).

The spelling of 12425442540 in words is "twelve billion, four hundred twenty-five million, four hundred forty-two thousand, five hundred forty".