12523669 has 2 divisors, whose sum is σ = 12523670. Its totient is φ = 12523668.

The previous prime is 12523663. The next prime is 12523681. The reversal of 12523669 is 96632521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9229444 + 3294225 = 3038^2 + 1815^2 .

It is a cyclic number.

It is not a de Polignac number, because 12523669 - 2⁷ = 12523541 is a prime.

It is a super-2 number, since 2×12523669² = 313684570443122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12523663) 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 as a sum of consecutive naturals, namely, 6261834 + 6261835.

It is an arithmetic number, because the mean of its divisors is an integer number (6261835).

Almost surely, 2^12523669 is an apocalyptic number.

It is an amenable number.

12523669 is a deficient number, since it is larger than the sum of its proper divisors (1).

12523669 is an equidigital number, since it uses as much as digits as its factorization.

12523669 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 19440, while the sum is 34.

The square root of 12523669 is about 3538.8796249661. The cubic root of 12523669 is about 232.2258316768.

The spelling of 12523669 in words is "twelve million, five hundred twenty-three thousand, six hundred sixty-nine".