12747825 has 36 divisors (see below), whose sum is σ = 23285340. Its totient is φ = 6664320.

The previous prime is 12747821. The next prime is 12747827. The reversal of 12747825 is 52874721.

It can be written as a sum of positive squares in 6 ways, for example, as 24336 + 12723489 = 156^2 + 3567^2 .

It is not a de Polignac number, because 12747825 - 2² = 12747821 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12747825.

It is not an unprimeable number, because it can be changed into a prime (12747821) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 11391 + ... + 12459.

It is an arithmetic number, because the mean of its divisors is an integer number (646815).

Almost surely, 2^12747825 is an apocalyptic number.

12747825 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12747825 is a deficient number, since it is larger than the sum of its proper divisors (10537515).

12747825 is a wasteful number, since it uses less digits than its factorization.

12747825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1138 (or 1130 counting only the distinct ones).

The product of its digits is 31360, while the sum is 36.

The square root of 12747825 is about 3570.4096403634. The cubic root of 12747825 is about 233.6031515904.

The spelling of 12747825 in words is "twelve million, seven hundred forty-seven thousand, eight hundred twenty-five".