12740025 has 24 divisors (see below), whose sum is σ = 21637504. Its totient is φ = 6609600.

The previous prime is 12740017. The next prime is 12740059. The reversal of 12740025 is 52004721.

12740025 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12740025 - 2³ = 12740017 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 12739983 and 12740010.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 480 + ... + 5070.

Almost surely, 2^12740025 is an apocalyptic number.

12740025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12740025 is a deficient number, since it is larger than the sum of its proper divisors (8897479).

12740025 is a wasteful number, since it uses less digits than its factorization.

12740025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4641 (or 4636 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 21.

The square root of 12740025 is about 3569.3171615871. The cubic root of 12740025 is about 233.5554970209. Note that the first 3 decimals are identical.

Adding to 12740025 its reverse (52004721), we get a palindrome (64744746).

The spelling of 12740025 in words is "twelve million, seven hundred forty thousand, twenty-five".