726725745 has 24 divisors (see below), whose sum is σ = 1265224896. Its totient is φ = 385874208.

The previous prime is 726725729. The next prime is 726725749. The reversal of 726725745 is 547527627.

726725745 is a `hidden beast` number, since 7 + 2 + 6 + 72 + 574 + 5 = 666.

726725745 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 726725745 - 2⁴ = 726725729 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 726725745.

It is not an unprimeable number, because it can be changed into a prime (726725749) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25357 + ... + 45786.

It is an arithmetic number, because the mean of its divisors is an integer number (52717704).

Almost surely, 2^726725745 is an apocalyptic number.

It is an amenable number.

726725745 is a deficient number, since it is larger than the sum of its proper divisors (538499151).

726725745 is a wasteful number, since it uses less digits than its factorization.

726725745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71381 (or 71378 counting only the distinct ones).

The product of its digits is 823200, while the sum is 45.

The square root of 726725745 is about 26957.8512682298. The cubic root of 726725745 is about 899.0631176549.

The spelling of 726725745 in words is "seven hundred twenty-six million, seven hundred twenty-five thousand, seven hundred forty-five".