225662663647 has 4 divisors (see below), whose sum is σ = 225664385080. Its totient is φ = 225660942216.

The previous prime is 225662663581. The next prime is 225662663651. The reversal of 225662663647 is 746366266522.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 225662663647 - 2¹¹ = 225662661599 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225662667647) 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 3 ways as a sum of consecutive naturals, for example, 646272 + ... + 932197.

It is an arithmetic number, because the mean of its divisors is an integer number (56416096270).

Almost surely, 2^225662663647 is an apocalyptic number.

225662663647 is a deficient number, since it is larger than the sum of its proper divisors (1721433).

225662663647 is a wasteful number, since it uses less digits than its factorization.

225662663647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1721432.

The product of its digits is 26127360, while the sum is 55.

The spelling of 225662663647 in words is "two hundred twenty-five billion, six hundred sixty-two million, six hundred sixty-three thousand, six hundred forty-seven".