12825440 has 48 divisors (see below), whose sum is σ = 30754080. Its totient is φ = 5053440.

The previous prime is 12825431. The next prime is 12825451. The reversal of 12825440 is 4452821.

It is a happy number.

It is a super-2 number, since 2×12825440² = 328983822387200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10796 + ... + 11924.

It is an arithmetic number, because the mean of its divisors is an integer number (640710).

Almost surely, 2^12825440 is an apocalyptic number.

12825440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12825440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15377040).

12825440 is an abundant number, since it is smaller than the sum of its proper divisors (17928640).

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

12825440 is a wasteful number, since it uses less digits than its factorization.

12825440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1215 (or 1207 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 26.

The square root of 12825440 is about 3581.2623472737. The cubic root of 12825440 is about 234.0762894408.

The spelling of 12825440 in words is "twelve million, eight hundred twenty-five thousand, four hundred forty".