12505706 has 4 divisors (see below), whose sum is σ = 18758562. Its totient is φ = 6252852.

The previous prime is 12505687. The next prime is 12505709. The reversal of 12505706 is 60750521.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 9247681 + 3258025 = 3041^2 + 1805^2 .

It is not an unprimeable number, because it can be changed into a prime (12505709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3126425 + ... + 3126428.

Almost surely, 2^12505706 is an apocalyptic number.

12505706 is a deficient number, since it is larger than the sum of its proper divisors (6252856).

12505706 is an equidigital number, since it uses as much as digits as its factorization.

12505706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6252855.

The product of its (nonzero) digits is 2100, while the sum is 26.

The square root of 12505706 is about 3536.3407641233. The cubic root of 12505706 is about 232.1147495166.

The spelling of 12505706 in words is "twelve million, five hundred five thousand, seven hundred six".