12405252 has 24 divisors (see below), whose sum is σ = 30469600. Its totient is φ = 3917376.

The previous prime is 12405221. The next prime is 12405269. The reversal of 12405252 is 25250421.

It is a happy number.

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, 26977 + ... + 27432.

Almost surely, 2^12405252 is an apocalyptic number.

12405252 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12405252 is an abundant number, since it is smaller than the sum of its proper divisors (18064348).

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

12405252 is a wasteful number, since it uses less digits than its factorization.

12405252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54435 (or 54433 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 12405252 is about 3522.1090272733. The cubic root of 12405252 is about 231.4915788555.

Adding to 12405252 its reverse (25250421), we get a palindrome (37655673).

The spelling of 12405252 in words is "twelve million, four hundred five thousand, two hundred fifty-two".