12440725 has 24 divisors (see below), whose sum is σ = 17722080. Its totient is φ = 8568000.

The previous prime is 12440711. The next prime is 12440741. The reversal of 12440725 is 52704421.

It is not a de Polignac number, because 12440725 - 2⁵ = 12440693 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a self number, because there is not a number n which added to its sum of digits gives 12440725.

It is a congruent number.

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, 4035 + ... + 6415.

It is an arithmetic number, because the mean of its divisors is an integer number (738420).

Almost surely, 2^12440725 is an apocalyptic number.

It is an amenable number.

12440725 is a deficient number, since it is larger than the sum of its proper divisors (5281355).

12440725 is a wasteful number, since it uses less digits than its factorization.

12440725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2421 (or 2416 counting only the distinct ones).

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

The square root of 12440725 is about 3527.1411936581. The cubic root of 12440725 is about 231.7120200586.

The spelling of 12440725 in words is "twelve million, four hundred forty thousand, seven hundred twenty-five".