225557563221577 has 4 divisors (see below), whose sum is σ = 225562580227840. Its totient is φ = 225552546215316.

The previous prime is 225557563221461. The next prime is 225557563221631. The reversal of 225557563221577 is 775122365755522.

225557563221577 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 225557563221577 - 2¹⁵ = 225557563188809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (225557563221877) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2508435693 + ... + 2508525610.

It is an arithmetic number, because the mean of its divisors is an integer number (56390645056960).

Almost surely, 2^{225557563221577} is an apocalyptic number.

It is an amenable number.

225557563221577 is a deficient number, since it is larger than the sum of its proper divisors (5017006263).

225557563221577 is an equidigital number, since it uses as much as digits as its factorization.

225557563221577 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5017006262.

The product of its digits is 308700000, while the sum is 64.

The spelling of 225557563221577 in words is "two hundred twenty-five trillion, five hundred fifty-seven billion, five hundred sixty-three million, two hundred twenty-one thousand, five hundred seventy-seven".