12025143550 has 24 divisors (see below), whose sum is σ = 25562020176. Its totient is φ = 4122906240.

The previous prime is 12025143541. The next prime is 12025143551. The reversal of 12025143550 is 5534152021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12025143551) 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, 17178427 + ... + 17179126.

It is an arithmetic number, because the mean of its divisors is an integer number (1065084174).

Almost surely, 2^12025143550 is an apocalyptic number.

12025143550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12025143550 is an abundant number, since it is smaller than the sum of its proper divisors (13536876626).

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

12025143550 is a wasteful number, since it uses less digits than its factorization.

12025143550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34357572 (or 34357567 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 28.

Adding to 12025143550 its reverse (5534152021), we get a palindrome (17559295571).

The spelling of 12025143550 in words is "twelve billion, twenty-five million, one hundred forty-three thousand, five hundred fifty".