12625406 has 4 divisors (see below), whose sum is σ = 18938112. Its totient is φ = 6312702.

The previous prime is 12625391. The next prime is 12625429. The reversal of 12625406 is 60452621.

It is a semiprime because it is the product of two primes.

It is a congruent number.

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 as a sum of consecutive naturals, namely, 3156350 + ... + 3156353.

It is an arithmetic number, because the mean of its divisors is an integer number (4734528).

Almost surely, 2^12625406 is an apocalyptic number.

12625406 is a deficient number, since it is larger than the sum of its proper divisors (6312706).

12625406 is an equidigital number, since it uses as much as digits as its factorization.

12625406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6312705.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 12625406 is about 3553.2247325493. The cubic root of 12625406 is about 232.8529713976.

It can be divided in two parts, 12625 and 406, that added together give a palindrome (13031).

The spelling of 12625406 in words is "twelve million, six hundred twenty-five thousand, four hundred six".