12521025 has 36 divisors (see below), whose sum is σ = 24470160. Its totient is φ = 6069600.

The previous prime is 12521021. The next prime is 12521053. The reversal of 12521025 is 52012521.

12521025 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12521025 - 2² = 12521021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12520989 and 12521007.

It is not an unprimeable number, because it can be changed into a prime (12521021) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 55 + ... + 5004.

Almost surely, 2^12521025 is an apocalyptic number.

12521025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12521025 is a deficient number, since it is larger than the sum of its proper divisors (11949135).

12521025 is a wasteful number, since it uses less digits than its factorization.

12521025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5086 (or 5078 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

The square root of 12521025 is about 3538.5060406901. The cubic root of 12521025 is about 232.2094880022.

Adding to 12521025 its reverse (52012521), we get a palindrome (64533546).

The spelling of 12521025 in words is "twelve million, five hundred twenty-one thousand, twenty-five".