225057233521 has 16 divisors (see below), whose sum is σ = 231634257984. Its totient is φ = 218506711104.

The previous prime is 225057233483. The next prime is 225057233563. The reversal of 225057233521 is 125332750522.

It is a cyclic number.

It is not a de Polignac number, because 225057233521 - 2³⁷ = 87618280049 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (225057233021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68053150 + ... + 68056456.

It is an arithmetic number, because the mean of its divisors is an integer number (14477141124).

Almost surely, 2^225057233521 is an apocalyptic number.

It is an amenable number.

225057233521 is a deficient number, since it is larger than the sum of its proper divisors (6577024463).

225057233521 is a wasteful number, since it uses less digits than its factorization.

225057233521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6720.

The product of its (nonzero) digits is 126000, while the sum is 37.

The spelling of 225057233521 in words is "two hundred twenty-five billion, fifty-seven million, two hundred thirty-three thousand, five hundred twenty-one".