225720363613 has 2 divisors, whose sum is σ = 225720363614. Its totient is φ = 225720363612.

The previous prime is 225720363587. The next prime is 225720363683. The reversal of 225720363613 is 316363027522.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 222480135684 + 3240227929 = 471678^2 + 56923^2 .

It is a cyclic number.

It is not a de Polignac number, because 225720363613 - 2³⁷ = 88281410141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (225720363683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112860181806 + 112860181807.

It is an arithmetic number, because the mean of its divisors is an integer number (112860181807).

Almost surely, 2^225720363613 is an apocalyptic number.

It is an amenable number.

225720363613 is a deficient number, since it is larger than the sum of its proper divisors (1).

225720363613 is an equidigital number, since it uses as much as digits as its factorization.

225720363613 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 272160, while the sum is 40.

The spelling of 225720363613 in words is "two hundred twenty-five billion, seven hundred twenty million, three hundred sixty-three thousand, six hundred thirteen".