6556617003725 has 12 divisors (see below), whose sum is σ = 8202153805716. Its totient is φ = 5198875073280.

The previous prime is 6556617003701. The next prime is 6556617003751. The reversal of 6556617003725 is 5273007166556.

It can be written as a sum of positive squares in 6 ways, for example, as 290191225636 + 6266425778089 = 538694^2 + 2503283^2 .

It is not a de Polignac number, because 6556617003725 - 2³⁰ = 6555543261901 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1160460362 + ... + 1160466011.

It is an arithmetic number, because the mean of its divisors is an integer number (683512817143).

Almost surely, 2^{6556617003725} is an apocalyptic number.

It is an amenable number.

6556617003725 is a deficient number, since it is larger than the sum of its proper divisors (1645536801991).

6556617003725 is a wasteful number, since it uses less digits than its factorization.

6556617003725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2320926496 (or 2320926491 counting only the distinct ones).

The product of its (nonzero) digits is 7938000, while the sum is 53.

The spelling of 6556617003725 in words is "six trillion, five hundred fifty-six billion, six hundred seventeen million, three thousand, seven hundred twenty-five".