12025550 has 24 divisors (see below), whose sum is σ = 23342256. Its totient is φ = 4600640.

The previous prime is 12025549. The next prime is 12025553. The reversal of 12025550 is 5552021.

It is a super-2 number, since 2×12025550² = 289227705605000, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12025553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4079 + ... + 6378.

It is an arithmetic number, because the mean of its divisors is an integer number (972594).

Almost surely, 2^12025550 is an apocalyptic number.

12025550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12025550 is a deficient number, since it is larger than the sum of its proper divisors (11316706).

12025550 is a wasteful number, since it uses less digits than its factorization.

12025550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10492 (or 10487 counting only the distinct ones).

The product of its (nonzero) digits is 500, while the sum is 20.

The square root of 12025550 is about 3467.7874790708. The cubic root of 12025550 is about 229.1052191543.

Adding to 12025550 its reverse (5552021), we get a palindrome (17577571).

The spelling of 12025550 in words is "twelve million, twenty-five thousand, five hundred fifty".