12725242 has 4 divisors (see below), whose sum is σ = 19087866. Its totient is φ = 6362620.

The previous prime is 12725239. The next prime is 12725249. The reversal of 12725242 is 24252721.

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., 12680721 + 44521 = 3561^2 + 211^2 .

It is a super-3 number, since 3×12725242³ (a number of 22 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (12725249) by changing a digit.

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 as a sum of consecutive naturals, namely, 3181309 + ... + 3181312.

Almost surely, 2^12725242 is an apocalyptic number.

12725242 is a deficient number, since it is larger than the sum of its proper divisors (6362624).

12725242 is an equidigital number, since it uses as much as digits as its factorization.

12725242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6362623.

The product of its digits is 2240, while the sum is 25.

The square root of 12725242 is about 3567.2457162354. The cubic root of 12725242 is about 233.4651259996.

Adding to 12725242 its reverse (24252721), we get a palindrome (36977963).

The spelling of 12725242 in words is "twelve million, seven hundred twenty-five thousand, two hundred forty-two".