12505426 has 8 divisors (see below), whose sum is σ = 18774000. Its totient is φ = 6247428.

The previous prime is 12505417. The next prime is 12505457. The reversal of 12505426 is 62450521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 12505426.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1825 + ... + 5323.

It is an arithmetic number, because the mean of its divisors is an integer number (2346750).

Almost surely, 2^12505426 is an apocalyptic number.

12505426 is a deficient number, since it is larger than the sum of its proper divisors (6268574).

12505426 is a wasteful number, since it uses less digits than its factorization.

12505426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5288.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 12505426 is about 3536.3011749567. The cubic root of 12505426 is about 232.1130171710.

Adding to 12505426 its reverse (62450521), we get a palindrome (74955947).

The spelling of 12505426 in words is "twelve million, five hundred five thousand, four hundred twenty-six".