1729895715025 has 27 divisors (see below), whose sum is σ = 2242585665201. Its totient is φ = 1323630543840.

The previous prime is 1729895715017. The next prime is 1729895715059. The reversal of 1729895715025 is 5205175989271.

It is a happy number.

The square root of 1729895715025 is 1315255.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 204196438161 + 1525699276864 = 451881^2 + 1235192^2 .

It is not a de Polignac number, because 1729895715025 - 2³ = 1729895715017 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 151248607 + ... + 151260043.

Almost surely, 2^{1729895715025} is an apocalyptic number.

1729895715025 is the 1315255-th square number.

1729895715025 is the 657628-th centered octagonal number.

It is an amenable number.

1729895715025 is a deficient number, since it is larger than the sum of its proper divisors (512689950176).

1729895715025 is an frugal number, since it uses more digits than its factorization.

1729895715025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22930 (or 11465 counting only the distinct ones).

The product of its (nonzero) digits is 15876000, while the sum is 61.

The spelling of 1729895715025 in words is "one trillion, seven hundred twenty-nine billion, eight hundred ninety-five million, seven hundred fifteen thousand, twenty-five".