225805818020513 has 8 divisors (see below), whose sum is σ = 233105911380480. Its totient is φ = 218506726830240.

The previous prime is 225805818020507. The next prime is 225805818020533. The reversal of 225805818020513 is 315020818508522.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-225805818020513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (225805818020533) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 250084493 + ... + 250985786.

It is an arithmetic number, because the mean of its divisors is an integer number (29138238922560).

Almost surely, 2^{225805818020513} is an apocalyptic number.

It is an amenable number.

225805818020513 is a deficient number, since it is larger than the sum of its proper divisors (7300093359967).

225805818020513 is a wasteful number, since it uses less digits than its factorization.

225805818020513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 501084847.

The product of its (nonzero) digits is 1536000, while the sum is 50.

The spelling of 225805818020513 in words is "two hundred twenty-five trillion, eight hundred five billion, eight hundred eighteen million, twenty thousand, five hundred thirteen".