225059672521 has 4 divisors (see below), whose sum is σ = 225062364100. Its totient is φ = 225056980944.

The previous prime is 225059672507. The next prime is 225059672533. The reversal of 225059672521 is 125276950522.

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

It can be written as a sum of positive squares in 2 ways, for example, as 35734609296 + 189325063225 = 189036^2 + 435115^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-225059672521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (225059672501) 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 3 ways as a sum of consecutive naturals, for example, 1216206 + ... + 1388983.

It is an arithmetic number, because the mean of its divisors is an integer number (56265591025).

Almost surely, 2^225059672521 is an apocalyptic number.

It is an amenable number.

225059672521 is a deficient number, since it is larger than the sum of its proper divisors (2691579).

225059672521 is an equidigital number, since it uses as much as digits as its factorization.

225059672521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2691578.

The product of its (nonzero) digits is 756000, while the sum is 46.

The spelling of 225059672521 in words is "two hundred twenty-five billion, fifty-nine million, six hundred seventy-two thousand, five hundred twenty-one".