12605005 has 12 divisors (see below), whose sum is σ = 17595900. Its totient is φ = 8643264.

The previous prime is 12604997. The next prime is 12605011. The reversal of 12605005 is 50050621.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 4206601 + 8398404 = 2051^2 + 2898^2 .

It is not a de Polignac number, because 12605005 - 2³ = 12604997 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25480 + ... + 25969.

It is an arithmetic number, because the mean of its divisors is an integer number (1466325).

Almost surely, 2^12605005 is an apocalyptic number.

It is an amenable number.

12605005 is a deficient number, since it is larger than the sum of its proper divisors (4990895).

12605005 is an equidigital number, since it uses as much as digits as its factorization.

12605005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51468 (or 51461 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 12605005 is about 3550.3527993708. The cubic root of 12605005 is about 232.7274838301.

Adding to 12605005 its reverse (50050621), we get a palindrome (62655626).

The spelling of 12605005 in words is "twelve million, six hundred five thousand, five".