3009720725 has 18 divisors (see below), whose sum is σ = 4102178850. Its totient is φ = 2188885600.

The previous prime is 3009720709. The next prime is 3009720731. The reversal of 3009720725 is 5270279003.

3009720725 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 610386436 + 2399334289 = 24706^2 + 48983^2 .

It is not a de Polignac number, because 3009720725 - 2⁴ = 3009720709 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 494450 + ... + 500499.

It is an arithmetic number, because the mean of its divisors is an integer number (227898825).

Almost surely, 2^3009720725 is an apocalyptic number.

It is an amenable number.

3009720725 is a deficient number, since it is larger than the sum of its proper divisors (1092458125).

3009720725 is a wasteful number, since it uses less digits than its factorization.

3009720725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 994981 (or 994965 counting only the distinct ones).

The product of its (nonzero) digits is 26460, while the sum is 35.

The square root of 3009720725 is about 54860.9216564943. The cubic root of 3009720725 is about 1443.8056365559.

Adding to 3009720725 its reverse (5270279003), we get a palindrome (8279999728).

The spelling of 3009720725 in words is "three billion, nine million, seven hundred twenty thousand, seven hundred twenty-five".