12565994 has 8 divisors (see below), whose sum is σ = 21541728. Its totient is φ = 5385420.

The previous prime is 12565991. The next prime is 12566003. The reversal of 12565994 is 49956521.

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

It is not an unprimeable number, because it can be changed into a prime (12565991) 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, 448772 + ... + 448799.

It is an arithmetic number, because the mean of its divisors is an integer number (2692716).

Almost surely, 2^12565994 is an apocalyptic number.

12565994 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

12565994 is a deficient number, since it is larger than the sum of its proper divisors (8975734).

12565994 is an equidigital number, since it uses as much as digits as its factorization.

12565994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 897580.

The product of its digits is 97200, while the sum is 41.

The square root of 12565994 is about 3544.8545809384. The cubic root of 12565994 is about 232.4871477075.

The spelling of 12565994 in words is "twelve million, five hundred sixty-five thousand, nine hundred ninety-four".