6720151825 has 24 divisors (see below), whose sum is σ = 8569596600. Its totient is φ = 5223859200.

The previous prime is 6720151777. The next prime is 6720151829. The reversal of 6720151825 is 5281510276.

It can be written as a sum of positive squares in 12 ways, for example, as 3424473361 + 3295678464 = 58519^2 + 57408^2 .

It is a de Polignac number, because none of the positive numbers 2^k-6720151825 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is not an unprimeable number, because it can be changed into a prime (6720151829) 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, 755001 + ... + 763849.

It is an arithmetic number, because the mean of its divisors is an integer number (357066525).

Almost surely, 2^6720151825 is an apocalyptic number.

It is an amenable number.

6720151825 is a deficient number, since it is larger than the sum of its proper divisors (1849444775).

6720151825 is a wasteful number, since it uses less digits than its factorization.

6720151825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9717 (or 9712 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 37.

The square root of 6720151825 is about 81976.5321601249. The cubic root of 6720151825 is about 1887.0918036047.

The spelling of 6720151825 in words is "six billion, seven hundred twenty million, one hundred fifty-one thousand, eight hundred twenty-five".