12725318 has 4 divisors (see below), whose sum is σ = 19087980. Its totient is φ = 6362658.

The previous prime is 12725303. The next prime is 12725329. The reversal of 12725318 is 81352721.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 81352721 = 53 ⋅1534957.

It is a super-2 number, since 2×12725318² = 323867436402248, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3181328 + ... + 3181331.

It is an arithmetic number, because the mean of its divisors is an integer number (4771995).

Almost surely, 2^12725318 is an apocalyptic number.

12725318 is a deficient number, since it is larger than the sum of its proper divisors (6362662).

12725318 is an equidigital number, since it uses as much as digits as its factorization.

12725318 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6362661.

The product of its digits is 3360, while the sum is 29.

The square root of 12725318 is about 3567.2563686957. The cubic root of 12725318 is about 233.4655907796.

The spelling of 12725318 in words is "twelve million, seven hundred twenty-five thousand, three hundred eighteen".