12545669 has 4 divisors (see below), whose sum is σ = 12950400. Its totient is φ = 12140940.

The previous prime is 12545647. The next prime is 12545671. The reversal of 12545669 is 96654521.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 96654521 = 1993 ⋅48497.

It is a cyclic number.

It is not a de Polignac number, because 12545669 - 2⁸ = 12545413 is a prime.

It is a super-2 number, since 2×12545669² = 314787621315122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12545369) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 202319 + ... + 202380.

It is an arithmetic number, because the mean of its divisors is an integer number (3237600).

Almost surely, 2^12545669 is an apocalyptic number.

It is an amenable number.

12545669 is a deficient number, since it is larger than the sum of its proper divisors (404731).

12545669 is an equidigital number, since it uses as much as digits as its factorization.

12545669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404730.

The product of its digits is 64800, while the sum is 38.

The square root of 12545669 is about 3541.9865894721. The cubic root of 12545669 is about 232.3617337999.

The spelling of 12545669 in words is "twelve million, five hundred forty-five thousand, six hundred sixty-nine".