6105725621 has 16 divisors (see below), whose sum is σ = 6425141760. Its totient is φ = 5794882560.

The previous prime is 6105725609. The next prime is 6105725669. The reversal of 6105725621 is 1265275016.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6105725621 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6105721621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 397541 + ... + 412613.

It is an arithmetic number, because the mean of its divisors is an integer number (401571360).

Almost surely, 2^6105725621 is an apocalyptic number.

It is an amenable number.

6105725621 is a deficient number, since it is larger than the sum of its proper divisors (319416139).

6105725621 is a wasteful number, since it uses less digits than its factorization.

6105725621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15356.

The product of its (nonzero) digits is 25200, while the sum is 35.

The square root of 6105725621 is about 78139.1426942989. The cubic root of 6105725621 is about 1827.7316316706.

The spelling of 6105725621 in words is "six billion, one hundred five million, seven hundred twenty-five thousand, six hundred twenty-one".