12521245 has 16 divisors (see below), whose sum is σ = 16567488. Its totient is φ = 9008640.

The previous prime is 12521239. The next prime is 12521291. The reversal of 12521245 is 54212521.

It is not a de Polignac number, because 12521245 - 2²³ = 4132637 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 4162 + ... + 6508.

It is an arithmetic number, because the mean of its divisors is an integer number (1035468).

Almost surely, 2^12521245 is an apocalyptic number.

It is an amenable number.

12521245 is a deficient number, since it is larger than the sum of its proper divisors (4046243).

12521245 is a wasteful number, since it uses less digits than its factorization.

12521245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2460.

The product of its digits is 800, while the sum is 22.

The square root of 12521245 is about 3538.5371271191. The cubic root of 12521245 is about 232.2108480024.

Adding to 12521245 its reverse (54212521), we get a palindrome (66733766).

The spelling of 12521245 in words is "twelve million, five hundred twenty-one thousand, two hundred forty-five".