12512404 has 6 divisors (see below), whose sum is σ = 21896714. Its totient is φ = 6256200.

The previous prime is 12512389. The next prime is 12512407. The reversal of 12512404 is 40421521.

It can be written as a sum of positive squares in only one way, i.e., 9622404 + 2890000 = 3102^2 + 1700^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12512407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1564047 + ... + 1564054.

Almost surely, 2^12512404 is an apocalyptic number.

It is an amenable number.

12512404 is a deficient number, since it is larger than the sum of its proper divisors (9384310).

12512404 is a wasteful number, since it uses less digits than its factorization.

12512404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3128105 (or 3128103 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 12512404 is about 3537.2876614717. The cubic root of 12512404 is about 232.1561819931.

Adding to 12512404 its reverse (40421521), we get a palindrome (52933925).

It can be divided in two parts, 1251 and 2404, that added together give a triangular number (3655 = T₈₅).

The spelling of 12512404 in words is "twelve million, five hundred twelve thousand, four hundred four".