12545210 has 16 divisors (see below), whose sum is σ = 22806792. Its totient is φ = 4968000.

The previous prime is 12545209. The next prime is 12545219. The reversal of 12545210 is 1254521.

It can be written as a sum of positive squares in 4 ways, for example, as 12327121 + 218089 = 3511^2 + 467^2 .

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12545219) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5201 + ... + 7220.

Almost surely, 2^12545210 is an apocalyptic number.

12545210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12545210 is a deficient number, since it is larger than the sum of its proper divisors (10261582).

12545210 is a wasteful number, since it uses less digits than its factorization.

12545210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12529.

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

The square root of 12545210 is about 3541.9217947323. The cubic root of 12545210 is about 232.3589000109.

Adding to 12545210 its reverse (1254521), we get a palindrome (13799731).

The spelling of 12545210 in words is "twelve million, five hundred forty-five thousand, two hundred ten".