225720079693 has 2 divisors, whose sum is σ = 225720079694. Its totient is φ = 225720079692.

The previous prime is 225720079691. The next prime is 225720079703. The reversal of 225720079693 is 396970027522.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 222554667049 + 3165412644 = 471757^2 + 56262^2 .

It is a cyclic number.

It is not a de Polignac number, because 225720079693 - 2¹ = 225720079691 is a prime.

It is a super-2 number, since 2×225720079693² (a number of 24 digits) contains 22 as substring.

Together with 225720079691, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 225720079693.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (225720079691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112860039846 + 112860039847.

It is an arithmetic number, because the mean of its divisors is an integer number (112860039847).

Almost surely, 2^225720079693 is an apocalyptic number.

It is an amenable number.

225720079693 is a deficient number, since it is larger than the sum of its proper divisors (1).

225720079693 is an equidigital number, since it uses as much as digits as its factorization.

225720079693 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2857680, while the sum is 52.

The spelling of 225720079693 in words is "two hundred twenty-five billion, seven hundred twenty million, seventy-nine thousand, six hundred ninety-three".