12745105 has 24 divisors (see below), whose sum is σ = 16898112. Its totient is φ = 9209376.

The previous prime is 12745099. The next prime is 12745127. The reversal of 12745105 is 50154721.

It is not a de Polignac number, because 12745105 - 2³ = 12745097 is a prime.

It is a super-2 number, since 2×12745105² = 324875402922050, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12745105.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 41362 + ... + 41668.

It is an arithmetic number, because the mean of its divisors is an integer number (704088).

Almost surely, 2^12745105 is an apocalyptic number.

It is an amenable number.

12745105 is a deficient number, since it is larger than the sum of its proper divisors (4153007).

12745105 is a wasteful number, since it uses less digits than its factorization.

12745105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 373 (or 354 counting only the distinct ones).

The product of its (nonzero) digits is 1400, while the sum is 25.

The square root of 12745105 is about 3570.0287113691. The cubic root of 12745105 is about 233.5865357947.

Adding to 12745105 its reverse (50154721), we get a palindrome (62899826).

The spelling of 12745105 in words is "twelve million, seven hundred forty-five thousand, one hundred five".