2004550525521 has 6 divisors (see below), whose sum is σ = 2895461870210. Its totient is φ = 1336367017008.

The previous prime is 2004550525517. The next prime is 2004550525559. The reversal of 2004550525521 is 1255250554002.

2004550525521 is a `hidden beast` number, since 2 + 0 + 0 + 4 + 5 + 50 + 52 + 552 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1107779405121 + 896771120400 = 1052511^2 + 946980^2 .

It is not a de Polignac number, because 2004550525521 - 2² = 2004550525517 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2004550925521) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 111363918076 + ... + 111363918093.

Almost surely, 2^{2004550525521} is an apocalyptic number.

It is an amenable number.

2004550525521 is a deficient number, since it is larger than the sum of its proper divisors (890911344689).

2004550525521 is a wasteful number, since it uses less digits than its factorization.

2004550525521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222727836175 (or 222727836172 counting only the distinct ones).

The product of its (nonzero) digits is 100000, while the sum is 36.

The spelling of 2004550525521 in words is "two trillion, four billion, five hundred fifty million, five hundred twenty-five thousand, five hundred twenty-one".