1804721042825 has 24 divisors (see below), whose sum is σ = 2241843120000. Its totient is φ = 1441204868160.

The previous prime is 1804721042801. The next prime is 1804721042833. The reversal of 1804721042825 is 5282401274081.

It is a de Polignac number, because none of the positive numbers 2^k-1804721042825 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 49395014 + ... + 49431536.

It is an arithmetic number, because the mean of its divisors is an integer number (93410130000).

Almost surely, 2^{1804721042825} is an apocalyptic number.

It is an amenable number.

1804721042825 is a deficient number, since it is larger than the sum of its proper divisors (437122077175).

1804721042825 is a wasteful number, since it uses less digits than its factorization.

1804721042825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40001 (or 39996 counting only the distinct ones).

The product of its (nonzero) digits is 286720, while the sum is 44.

The spelling of 1804721042825 in words is "one trillion, eight hundred four billion, seven hundred twenty-one million, forty-two thousand, eight hundred twenty-five".