12905745 has 8 divisors (see below), whose sum is σ = 20649216. Its totient is φ = 6883056.

The previous prime is 12905723. The next prime is 12905749. The reversal of 12905745 is 54750921.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12905745 - 2⁵ = 12905713 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12905749) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 430177 + ... + 430206.

It is an arithmetic number, because the mean of its divisors is an integer number (2581152).

Almost surely, 2^12905745 is an apocalyptic number.

12905745 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12905745 is a deficient number, since it is larger than the sum of its proper divisors (7743471).

12905745 is an equidigital number, since it uses as much as digits as its factorization.

12905745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 860391.

The product of its (nonzero) digits is 12600, while the sum is 33.

The square root of 12905745 is about 3592.4566803234. The cubic root of 12905745 is about 234.5638204612.

The spelling of 12905745 in words is "twelve million, nine hundred five thousand, seven hundred forty-five".