12705250 has 16 divisors (see below), whose sum is σ = 23784696. Its totient is φ = 5082000.

The previous prime is 12705229. The next prime is 12705271. The reversal of 12705250 is 5250721.

It is an interprime number because it is at equal distance from previous prime (12705229) and next prime (12705271).

It can be written as a sum of positive squares in 4 ways, for example, as 7834401 + 4870849 = 2799^2 + 2207^2 .

It is a super-2 number, since 2×12705250² = 322846755125000, which contains 22 as substring.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25161 + ... + 25660.

Almost surely, 2^12705250 is an apocalyptic number.

12705250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12705250 is a deficient number, since it is larger than the sum of its proper divisors (11079446).

12705250 is an equidigital number, since it uses as much as digits as its factorization.

12705250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50838 (or 50828 counting only the distinct ones).

The product of its (nonzero) digits is 700, while the sum is 22.

The square root of 12705250 is about 3564.4424528950. The cubic root of 12705250 is about 233.3428000694.

Adding to 12705250 its reverse (5250721), we get a palindrome (17955971).

The spelling of 12705250 in words is "twelve million, seven hundred five thousand, two hundred fifty".