12565623 has 8 divisors (see below), whose sum is σ = 19147648. Its totient is φ = 7180344.

The previous prime is 12565603. The next prime is 12565627. The reversal of 12565623 is 32656521.

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

It is not a de Polignac number, because 12565623 - 2¹⁰ = 12564599 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12565627) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 299161 + ... + 299202.

It is an arithmetic number, because the mean of its divisors is an integer number (2393456).

Almost surely, 2^12565623 is an apocalyptic number.

12565623 is a deficient number, since it is larger than the sum of its proper divisors (6582025).

12565623 is an equidigital number, since it uses as much as digits as its factorization.

12565623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 598373.

The product of its digits is 10800, while the sum is 30.

The square root of 12565623 is about 3544.8022511841. The cubic root of 12565623 is about 232.4848596916.

The spelling of 12565623 in words is "twelve million, five hundred sixty-five thousand, six hundred twenty-three".