204105425040 has 120 divisors (see below), whose sum is σ = 747768086208. Its totient is φ = 49480101120.

The previous prime is 204105424993. The next prime is 204105425057. The reversal of 204105425040 is 40524501402.

204105425040 is a `hidden beast` number, since 20 + 4 + 10 + 542 + 50 + 40 = 666.

It is a tau number, because it is divible by the number of its divisors (120).

It is a junction number, because it is equal to n+sod(n) for n = 204105424995 and 204105425013.

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, 12877524 + ... + 12893363.

Almost surely, 2^204105425040 is an apocalyptic number.

204105425040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204105425040 is an abundant number, since it is smaller than the sum of its proper divisors (543662661168).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

204105425040 is a wasteful number, since it uses less digits than its factorization.

204105425040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25770917 (or 25770908 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 27.

Adding to 204105425040 its reverse (40524501402), we get a palindrome (244629926442).

The spelling of 204105425040 in words is "two hundred four billion, one hundred five million, four hundred twenty-five thousand, forty".