1725965802721 has 8 divisors (see below), whose sum is σ = 1727443551680. Its totient is φ = 1724488479792.

The previous prime is 1725965802679. The next prime is 1725965802767. The reversal of 1725965802721 is 1272085695271.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1725965802721 - 2⁷ = 1725965802593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1725969802721) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8280460 + ... + 8486338.

It is an arithmetic number, because the mean of its divisors is an integer number (215930443960).

Almost surely, 2^{1725965802721} is an apocalyptic number.

It is an amenable number.

1725965802721 is a deficient number, since it is larger than the sum of its proper divisors (1477748959).

1725965802721 is a wasteful number, since it uses less digits than its factorization.

1725965802721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213015.

The product of its (nonzero) digits is 4233600, while the sum is 55.

The spelling of 1725965802721 in words is "one trillion, seven hundred twenty-five billion, nine hundred sixty-five million, eight hundred two thousand, seven hundred twenty-one".