12757725 has 18 divisors (see below), whose sum is σ = 22850906. Its totient is φ = 6804000.

The previous prime is 12757649. The next prime is 12757739. The reversal of 12757725 is 52775721.

It can be written as a sum of positive squares in 3 ways, for example, as 1285956 + 11471769 = 1134^2 + 3387^2 .

It is not a de Polignac number, because 12757725 - 2⁷ = 12757597 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12757725.

It is a congruent number.

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 17 ways as a sum of consecutive naturals, for example, 28126 + ... + 28575.

Almost surely, 2^12757725 is an apocalyptic number.

12757725 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12757725 is a deficient number, since it is larger than the sum of its proper divisors (10093181).

12757725 is a wasteful number, since it uses less digits than its factorization.

12757725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56717 (or 56709 counting only the distinct ones).

The product of its digits is 34300, while the sum is 36.

The square root of 12757725 is about 3571.7957668377. The cubic root of 12757725 is about 233.6636082509.

It can be divided in two parts, 1 and 2757725, that added together give a triangular number (2757726 = T₂₃₄₈).

The spelling of 12757725 in words is "twelve million, seven hundred fifty-seven thousand, seven hundred twenty-five".