12500145 has 36 divisors (see below), whose sum is σ = 25208820. Its totient is φ = 5713344.

The previous prime is 12500101. The next prime is 12500177. The reversal of 12500145 is 54100521.

It can be written as a sum of positive squares in 2 ways, for example, as 3732624 + 8767521 = 1932^2 + 2961^2 .

It is not a de Polignac number, because 12500145 - 2¹⁰ = 12499121 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 630 + ... + 5039.

It is an arithmetic number, because the mean of its divisors is an integer number (700245).

Almost surely, 2^12500145 is an apocalyptic number.

12500145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12500145 is an abundant number, since it is smaller than the sum of its proper divisors (12708675).

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

12500145 is a wasteful number, since it uses less digits than its factorization.

12500145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5694 (or 5684 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

The square root of 12500145 is about 3535.5544119699. The cubic root of 12500145 is about 232.0803390510.

Adding to 12500145 its reverse (54100521), we get a palindrome (66600666).

The spelling of 12500145 in words is "twelve million, five hundred thousand, one hundred forty-five".