12541005 has 12 divisors (see below), whose sum is σ = 21737820. Its totient is φ = 6688512.

The previous prime is 12540989. The next prime is 12541027. The reversal of 12541005 is 50014521.

It can be written as a sum of positive squares in 2 ways, for example, as 2082249 + 10458756 = 1443^2 + 3234^2 .

It is not a de Polignac number, because 12541005 - 2⁴ = 12540989 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 139300 + ... + 139389.

It is an arithmetic number, because the mean of its divisors is an integer number (1811485).

Almost surely, 2^12541005 is an apocalyptic number.

12541005 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12541005 is a deficient number, since it is larger than the sum of its proper divisors (9196815).

12541005 is a wasteful number, since it uses less digits than its factorization.

12541005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278700 (or 278697 counting only the distinct ones).

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

The square root of 12541005 is about 3541.3281406839. The cubic root of 12541005 is about 232.3329358285.

Adding to 12541005 its reverse (50014521), we get a palindrome (62555526).

The spelling of 12541005 in words is "twelve million, five hundred forty-one thousand, five".