12425550 has 24 divisors (see below), whose sum is σ = 30815736. Its totient is φ = 3313440.

The previous prime is 12425509. The next prime is 12425551. The reversal of 12425550 is 5552421.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 12425550.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12425551) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 41269 + ... + 41568.

It is an arithmetic number, because the mean of its divisors is an integer number (1283989).

Almost surely, 2^12425550 is an apocalyptic number.

12425550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12425550 is an abundant number, since it is smaller than the sum of its proper divisors (18390186).

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

12425550 is a wasteful number, since it uses less digits than its factorization.

12425550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82852 (or 82847 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 24.

The square root of 12425550 is about 3524.9893616861. The cubic root of 12425550 is about 231.6177688378.

Adding to 12425550 its reverse (5552421), we get a palindrome (17977971).

The spelling of 12425550 in words is "twelve million, four hundred twenty-five thousand, five hundred fifty".