12515423 has 2 divisors, whose sum is σ = 12515424. Its totient is φ = 12515422.

The previous prime is 12515407. The next prime is 12515449. The reversal of 12515423 is 32451521.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12515423 - 2⁴ = 12515407 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12515453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6257711 + 6257712.

It is an arithmetic number, because the mean of its divisors is an integer number (6257712).

Almost surely, 2^12515423 is an apocalyptic number.

12515423 is a deficient number, since it is larger than the sum of its proper divisors (1).

12515423 is an equidigital number, since it uses as much as digits as its factorization.

12515423 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1200, while the sum is 23.

The square root of 12515423 is about 3537.7143751298. The cubic root of 12515423 is about 232.1748520838.

Adding to 12515423 its reverse (32451521), we get a palindrome (44966944).

The spelling of 12515423 in words is "twelve million, five hundred fifteen thousand, four hundred twenty-three".