12405256 has 16 divisors (see below), whose sum is σ = 23340240. Its totient is φ = 6181200.

The previous prime is 12405221. The next prime is 12405269. The reversal of 12405256 is 65250421.

It is a self number, because there is not a number n which added to its sum of digits gives 12405256.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70 + ... + 4981.

It is an arithmetic number, because the mean of its divisors is an integer number (1458765).

Almost surely, 2^12405256 is an apocalyptic number.

It is an amenable number.

12405256 is a deficient number, since it is larger than the sum of its proper divisors (10934984).

12405256 is a wasteful number, since it uses less digits than its factorization.

12405256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5364 (or 5360 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 12405256 is about 3522.1095951148. The cubic root of 12405256 is about 231.4916037365.

Adding to 12405256 its reverse (65250421), we get a palindrome (77655677).

The spelling of 12405256 in words is "twelve million, four hundred five thousand, two hundred fifty-six".