12520583426 has 32 divisors (see below), whose sum is σ = 20591348736. Its totient is φ = 5674536000.

The previous prime is 12520583407. The next prime is 12520583497. The reversal of 12520583426 is 62438502521.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 12520583426.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 994511 + ... + 1007021.

It is an arithmetic number, because the mean of its divisors is an integer number (643479648).

Almost surely, 2^12520583426 is an apocalyptic number.

12520583426 is a deficient number, since it is larger than the sum of its proper divisors (8070765310).

12520583426 is a wasteful number, since it uses less digits than its factorization.

12520583426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13218.

The product of its (nonzero) digits is 115200, while the sum is 38.

The spelling of 12520583426 in words is "twelve billion, five hundred twenty million, five hundred eighty-three thousand, four hundred twenty-six".