12505351 has 4 divisors (see below), whose sum is σ = 12936600. Its totient is φ = 12074104.

The previous prime is 12505331. The next prime is 12505357. The reversal of 12505351 is 15350521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15350521 = 263 ⋅58367.

It is a cyclic number.

It is not a de Polignac number, because 12505351 - 2¹⁵ = 12472583 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12505357) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 215581 + ... + 215638.

It is an arithmetic number, because the mean of its divisors is an integer number (3234150).

Almost surely, 2^12505351 is an apocalyptic number.

12505351 is a deficient number, since it is larger than the sum of its proper divisors (431249).

12505351 is an equidigital number, since it uses as much as digits as its factorization.

12505351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 431248.

The product of its (nonzero) digits is 750, while the sum is 22.

The square root of 12505351 is about 3536.2905706404. The cubic root of 12505351 is about 232.1125531454.

Adding to 12505351 its reverse (15350521), we get a palindrome (27855872).

The spelling of 12505351 in words is "twelve million, five hundred five thousand, three hundred fifty-one".