225621046655644 has 12 divisors (see below), whose sum is σ = 394838746218784. Its totient is φ = 112809976307424.

The previous prime is 225621046655597. The next prime is 225621046655659. The reversal of 225621046655644 is 446556640126522.

It is a happy number.

It is a hoax number, since the sum of its digits (58) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 135826377 + ... + 137477440.

Almost surely, 2^{225621046655644} is an apocalyptic number.

It is an amenable number.

225621046655644 is a deficient number, since it is larger than the sum of its proper divisors (169217699563140).

225621046655644 is a wasteful number, since it uses less digits than its factorization.

225621046655644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 273510204 (or 273510202 counting only the distinct ones).

The product of its (nonzero) digits is 82944000, while the sum is 58.

The spelling of 225621046655644 in words is "two hundred twenty-five trillion, six hundred twenty-one billion, forty-six million, six hundred fifty-five thousand, six hundred forty-four".