1720468781425 has 6 divisors (see below), whose sum is σ = 2133381288998. Its totient is φ = 1376375025120.

The previous prime is 1720468781407. The next prime is 1720468781453. The reversal of 1720468781425 is 5241878640271.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 221832522081 + 1498636259344 = 470991^2 + 1224188^2 .

It is not a de Polignac number, because 1720468781425 - 2¹⁵ = 1720468748657 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 34409375604 + ... + 34409375653.

Almost surely, 2^{1720468781425} is an apocalyptic number.

It is an amenable number.

1720468781425 is a deficient number, since it is larger than the sum of its proper divisors (412912507573).

1720468781425 is an equidigital number, since it uses as much as digits as its factorization.

1720468781425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68818751267 (or 68818751262 counting only the distinct ones).

The product of its (nonzero) digits is 6021120, while the sum is 55.

The spelling of 1720468781425 in words is "one trillion, seven hundred twenty billion, four hundred sixty-eight million, seven hundred eighty-one thousand, four hundred twenty-five".