12425520 has 80 divisors (see below), whose sum is σ = 40211712. Its totient is φ = 3168000.

The previous prime is 12425509. The next prime is 12425551. The reversal of 12425520 is 2552421.

It is a happy number.

12425520 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4395 + ... + 6645.

Almost surely, 2^12425520 is an apocalyptic number.

12425520 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 12425520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20105856).

12425520 is an abundant number, since it is smaller than the sum of its proper divisors (27786192).

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

12425520 is a wasteful number, since it uses less digits than its factorization.

12425520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2290 (or 2284 counting only the distinct ones).

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

The square root of 12425520 is about 3524.9851063515. The cubic root of 12425520 is about 231.6175824333.

Adding to 12425520 its reverse (2552421), we get a palindrome (14977941).

The spelling of 12425520 in words is "twelve million, four hundred twenty-five thousand, five hundred twenty".