1684854473825 has 12 divisors (see below), whose sum is σ = 2097163356288. Its totient is φ = 1342758541200.

The previous prime is 1684854473821. The next prime is 1684854473831. The reversal of 1684854473825 is 5283744584861.

It is not a de Polignac number, because 1684854473825 - 2² = 1684854473821 is a prime.

It is a super-2 number, since 2×1684854473825² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1684854473821) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 128119241 + ... + 128132390.

It is an arithmetic number, because the mean of its divisors is an integer number (174763613024).

Almost surely, 2^{1684854473825} is an apocalyptic number.

It is an amenable number.

1684854473825 is a deficient number, since it is larger than the sum of its proper divisors (412308882463).

1684854473825 is a wasteful number, since it uses less digits than its factorization.

1684854473825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256251904 (or 256251899 counting only the distinct ones).

The product of its digits is 206438400, while the sum is 65.

The spelling of 1684854473825 in words is "one trillion, six hundred eighty-four billion, eight hundred fifty-four million, four hundred seventy-three thousand, eight hundred twenty-five".