1656608675225 has 48 divisors (see below), whose sum is σ = 2475034444800. Its totient is φ = 1074508130880.

The previous prime is 1656608675203. The next prime is 1656608675273. The reversal of 1656608675225 is 5225768066561.

It is not a de Polignac number, because 1656608675225 - 2¹² = 1656608671129 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 47 ways as a sum of consecutive naturals, for example, 1766246 + ... + 2536304.

It is an arithmetic number, because the mean of its divisors is an integer number (51563217600).

Almost surely, 2^{1656608675225} is an apocalyptic number.

It is an amenable number.

1656608675225 is a deficient number, since it is larger than the sum of its proper divisors (818425769575).

1656608675225 is a wasteful number, since it uses less digits than its factorization.

1656608675225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 770742 (or 770737 counting only the distinct ones).

The product of its (nonzero) digits is 36288000, while the sum is 59.

The spelling of 1656608675225 in words is "one trillion, six hundred fifty-six billion, six hundred eight million, six hundred seventy-five thousand, two hundred twenty-five".