12940725 has 36 divisors (see below), whose sum is σ = 24608544. Its totient is φ = 5878080.

The previous prime is 12940717. The next prime is 12940727. The reversal of 12940725 is 52704921.

It is not a de Polignac number, because 12940725 - 2³ = 12940717 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 12940692 and 12940701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12940727) 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, 82347 + ... + 82503.

Almost surely, 2^12940725 is an apocalyptic number.

12940725 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12940725 is a deficient number, since it is larger than the sum of its proper divisors (11667819).

12940725 is an equidigital number, since it uses as much as digits as its factorization.

12940725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334 (or 172 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 12940725 is about 3597.3219205403. The cubic root of 12940725 is about 234.7755515040.

It can be divided in two parts, 129 and 40725, that multiplied together give a palindrome (5253525).

The spelling of 12940725 in words is "twelve million, nine hundred forty thousand, seven hundred twenty-five".