12250550 has 48 divisors (see below), whose sum is σ = 25123392. Its totient is φ = 4416000.

The previous prime is 12250543. The next prime is 12250561. The reversal of 12250550 is 5505221.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 30350 + ... + 30750.

It is an arithmetic number, because the mean of its divisors is an integer number (523404).

Almost surely, 2^12250550 is an apocalyptic number.

12250550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12250550 is an abundant number, since it is smaller than the sum of its proper divisors (12872842).

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

12250550 is a wasteful number, since it uses less digits than its factorization.

12250550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 473 (or 468 counting only the distinct ones).

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

The square root of 12250550 is about 3500.0785705467. The cubic root of 12250550 is about 230.5252645376.

Adding to 12250550 its reverse (5505221), we get a palindrome (17755771).

The spelling of 12250550 in words is "twelve million, two hundred fifty thousand, five hundred fifty".