6601358825 has 24 divisors (see below), whose sum is σ = 8746772760. Its totient is φ = 4924800000.

The previous prime is 6601358809. The next prime is 6601358831. The reversal of 6601358825 is 5288531066.

It can be written as a sum of positive squares in 12 ways, for example, as 872079961 + 5729278864 = 29531^2 + 75692^2 .

It is not a de Polignac number, because 6601358825 - 2⁴ = 6601358809 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24926 + ... + 117575.

It is an arithmetic number, because the mean of its divisors is an integer number (364448865).

Almost surely, 2^6601358825 is an apocalyptic number.

It is an amenable number.

6601358825 is a deficient number, since it is larger than the sum of its proper divisors (2145413935).

6601358825 is a wasteful number, since it uses less digits than its factorization.

6601358825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142637 (or 142632 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 44.

The square root of 6601358825 is about 81248.7466057169. The cubic root of 6601358825 is about 1875.9061764982.

The spelling of 6601358825 in words is "six billion, six hundred one million, three hundred fifty-eight thousand, eight hundred twenty-five".