1725320671 has 2 divisors, whose sum is σ = 1725320672. Its totient is φ = 1725320670.

The previous prime is 1725320629. The next prime is 1725320719. The reversal of 1725320671 is 1760235271.

It is a weak prime.

It is an emirp because it is prime and its reverse (1760235271) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1725320671 - 2¹⁵ = 1725287903 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1725320371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 862660335 + 862660336.

It is an arithmetic number, because the mean of its divisors is an integer number (862660336).

Almost surely, 2^1725320671 is an apocalyptic number.

1725320671 is a deficient number, since it is larger than the sum of its proper divisors (1).

1725320671 is an equidigital number, since it uses as much as digits as its factorization.

1725320671 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17640, while the sum is 34.

The square root of 1725320671 is about 41536.9795603869. The cubic root of 1725320671 is about 1199.3794641217.

The spelling of 1725320671 in words is "one billion, seven hundred twenty-five million, three hundred twenty thousand, six hundred seventy-one".