12512456 has 32 divisors (see below), whose sum is σ = 26481600. Its totient is φ = 5490240.

The previous prime is 12512447. The next prime is 12512501. The reversal of 12512456 is 65421521.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 101 + ... + 5003.

It is an arithmetic number, because the mean of its divisors is an integer number (827550).

Almost surely, 2^12512456 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12512456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13240800).

12512456 is an abundant number, since it is smaller than the sum of its proper divisors (13969144).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12512456 is a wasteful number, since it uses less digits than its factorization.

12512456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4949 (or 4945 counting only the distinct ones).

The product of its digits is 2400, while the sum is 26.

The square root of 12512456 is about 3537.2950117286. The cubic root of 12512456 is about 232.1565035968.

Adding to 12512456 its reverse (65421521), we get a palindrome (77933977).

The spelling of 12512456 in words is "twelve million, five hundred twelve thousand, four hundred fifty-six".