12550000 has 60 divisors (see below), whose sum is σ = 30513672. Its totient is φ = 5000000.

The previous prime is 12549913. The next prime is 12550001. The reversal of 12550000 is 5521.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12550001) 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, 49875 + ... + 50125.

Almost surely, 2^12550000 is an apocalyptic number.

12550000 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 12550000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15256836).

12550000 is an abundant number, since it is smaller than the sum of its proper divisors (17963672).

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

12550000 is an frugal number, since it uses more digits than its factorization.

12550000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284 (or 258 counting only the distinct ones).

The product of its (nonzero) digits is 50, while the sum is 13.

The square root of 12550000 is about 3542.5979167837. The cubic root of 12550000 is about 232.3884692650.

Adding to 12550000 its reverse (5521), we get a palindrome (12555521).

It can be divided in two parts, 125 and 50000, that multiplied together give a 4-th power (6250000 = 50⁴).

The spelling of 12550000 in words is "twelve million, five hundred fifty thousand".