225310335521 has 2 divisors, whose sum is σ = 225310335522. Its totient is φ = 225310335520.

The previous prime is 225310335463. The next prime is 225310335541. The reversal of 225310335521 is 125533013522.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 169361056225 + 55949279296 = 411535^2 + 236536^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-225310335521 is a prime.

It is not a weakly prime, because it can be changed into another prime (225310335541) 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 as a sum of consecutive naturals, namely, 112655167760 + 112655167761.

It is an arithmetic number, because the mean of its divisors is an integer number (112655167761).

Almost surely, 2^225310335521 is an apocalyptic number.

It is an amenable number.

225310335521 is a deficient number, since it is larger than the sum of its proper divisors (1).

225310335521 is an equidigital number, since it uses as much as digits as its factorization.

225310335521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27000, while the sum is 32.

The spelling of 225310335521 in words is "two hundred twenty-five billion, three hundred ten million, three hundred thirty-five thousand, five hundred twenty-one".