12145250 has 64 divisors (see below), whose sum is σ = 25395552. Its totient is φ = 4320000.

The previous prime is 12145241. The next prime is 12145261. The reversal of 12145250 is 5254121.

It can be written as a sum of positive squares in 16 ways, for example, as 152881 + 11992369 = 391^2 + 3463^2 .

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 120200 + ... + 120300.

Almost surely, 2^12145250 is an apocalyptic number.

12145250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12145250 is an abundant number, since it is smaller than the sum of its proper divisors (13250302).

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

12145250 is a wasteful number, since it uses less digits than its factorization.

12145250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168 (or 158 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 12145250 is about 3485.0035867987. The cubic root of 12145250 is about 229.8628672139.

Adding to 12145250 its reverse (5254121), we get a palindrome (17399371).

The spelling of 12145250 in words is "twelve million, one hundred forty-five thousand, two hundred fifty".