225111660355513 has 4 divisors (see below), whose sum is σ = 225446150193268. Its totient is φ = 224777170517760.

The previous prime is 225111660355457. The next prime is 225111660355559. The reversal of 225111660355513 is 315553066111522.

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 149746812203664 + 75364848151849 = 12237108^2 + 8681293^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-225111660355513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (225111660350513) 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, 167244917868 + ... + 167244919213.

It is an arithmetic number, because the mean of its divisors is an integer number (56361537548317).

Almost surely, 2^{225111660355513} is an apocalyptic number.

It is an amenable number.

225111660355513 is a deficient number, since it is larger than the sum of its proper divisors (334489837755).

225111660355513 is an equidigital number, since it uses as much as digits as its factorization.

225111660355513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334489837754.

The product of its (nonzero) digits is 810000, while the sum is 46.

The spelling of 225111660355513 in words is "two hundred twenty-five trillion, one hundred eleven billion, six hundred sixty million, three hundred fifty-five thousand, five hundred thirteen".