3555243665425 has 12 divisors (see below), whose sum is σ = 4411106156380. Its totient is φ = 2842514925120.

The previous prime is 3555243665419. The next prime is 3555243665429. The reversal of 3555243665425 is 5245663425553.

It can be written as a sum of positive squares in 6 ways, for example, as 122331358081 + 3432912307344 = 349759^2 + 1852812^2 .

It is not a de Polignac number, because 3555243665425 - 2³ = 3555243665417 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3555243665429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 41957010 + ... + 42041659.

Almost surely, 2^{3555243665425} is an apocalyptic number.

It is an amenable number.

3555243665425 is a deficient number, since it is larger than the sum of its proper divisors (855862490955).

3555243665425 is a wasteful number, since it uses less digits than its factorization.

3555243665425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84000372 (or 84000367 counting only the distinct ones).

The product of its digits is 64800000, while the sum is 55.

The spelling of 3555243665425 in words is "three trillion, five hundred fifty-five billion, two hundred forty-three million, six hundred sixty-five thousand, four hundred twenty-five".