1679920287725 has 12 divisors (see below), whose sum is σ = 2083294889760. Its totient is φ = 1343811241200.

The previous prime is 1679920287691. The next prime is 1679920287743. The reversal of 1679920287725 is 5277820299761.

It is not a de Polignac number, because 1679920287725 - 2²⁰ = 1679919239149 is a prime.

It is a super-2 number, since 2×1679920287725² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2850065 + ... + 3388614.

It is an arithmetic number, because the mean of its divisors is an integer number (173607907480).

Almost surely, 2^{1679920287725} is an apocalyptic number.

It is an amenable number.

1679920287725 is a deficient number, since it is larger than the sum of its proper divisors (403374602035).

1679920287725 is a wasteful number, since it uses less digits than its factorization.

1679920287725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6249460 (or 6249455 counting only the distinct ones).

The product of its (nonzero) digits is 53343360, while the sum is 65.

The spelling of 1679920287725 in words is "one trillion, six hundred seventy-nine billion, nine hundred twenty million, two hundred eighty-seven thousand, seven hundred twenty-five".