12605004 has 48 divisors (see below), whose sum is σ = 32972800. Its totient is φ = 4164048.

The previous prime is 12604997. The next prime is 12605011. The reversal of 12605004 is 40050621.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (12604997) and next prime (12605011).

It is a super-2 number, since 2×12605004² = 317772251680032, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

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, 13257 + ... + 14175.

Almost surely, 2^12605004 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12605004, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16486400).

12605004 is an abundant number, since it is smaller than the sum of its proper divisors (20367796).

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

12605004 is a wasteful number, since it uses less digits than its factorization.

12605004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1059 (or 1051 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 12605004 is about 3550.3526585397. The cubic root of 12605004 is about 232.7274776757.

Adding to 12605004 its reverse (40050621), we get a palindrome (52655625).

The spelling of 12605004 in words is "twelve million, six hundred five thousand, four".