12561150250 has 32 divisors (see below), whose sum is σ = 25652158272. Its totient is φ = 4567690000.

The previous prime is 12561150229. The next prime is 12561150253. The reversal of 12561150250 is 5205116521.

It is not an unprimeable number, because it can be changed into a prime (12561150253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2281096 + ... + 2286595.

It is an arithmetic number, because the mean of its divisors is an integer number (801629946).

Almost surely, 2^12561150250 is an apocalyptic number.

12561150250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12561150250 is an abundant number, since it is smaller than the sum of its proper divisors (13091008022).

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

12561150250 is a wasteful number, since it uses less digits than its factorization.

12561150250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4567719 (or 4567709 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 28.

Adding to 12561150250 its reverse (5205116521), we get a palindrome (17766266771).

The spelling of 12561150250 in words is "twelve billion, five hundred sixty-one million, one hundred fifty thousand, two hundred fifty".