1020205254005 has 16 divisors (see below), whose sum is σ = 1481440907520. Its totient is φ = 658418180352.

The previous prime is 1020205253989. The next prime is 1020205254007. The reversal of 1020205254005 is 5004525020201.

It is a cyclic number.

It is not a de Polignac number, because 1020205254005 - 2⁴ = 1020205253989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020205254007) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 857314745 + ... + 857315934.

It is an arithmetic number, because the mean of its divisors is an integer number (92590056720).

Almost surely, 2^{1020205254005} is an apocalyptic number.

It is an amenable number.

1020205254005 is a deficient number, since it is larger than the sum of its proper divisors (461235653515).

1020205254005 is a wasteful number, since it uses less digits than its factorization.

1020205254005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1714630708.

The product of its (nonzero) digits is 4000, while the sum is 26.

The spelling of 1020205254005 in words is "one trillion, twenty billion, two hundred five million, two hundred fifty-four thousand, five".