1000200525521 has 2 divisors, whose sum is σ = 1000200525522. Its totient is φ = 1000200525520.

The previous prime is 1000200525481. The next prime is 1000200525539. The reversal of 1000200525521 is 1255250020001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 630340723600 + 369859801921 = 793940^2 + 608161^2 .

It is a cyclic number.

It is not a de Polignac number, because 1000200525521 - 2¹⁴ = 1000200509137 is a prime.

It is not a weakly prime, because it can be changed into another prime (1005200525521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500100262760 + 500100262761.

It is an arithmetic number, because the mean of its divisors is an integer number (500100262761).

Almost surely, 2^{1000200525521} is an apocalyptic number.

It is an amenable number.

1000200525521 is a deficient number, since it is larger than the sum of its proper divisors (1).

1000200525521 is an equidigital number, since it uses as much as digits as its factorization.

1000200525521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1000, while the sum is 23.

Adding to 1000200525521 its reverse (1255250020001), we get a palindrome (2255450545522).

The spelling of 1000200525521 in words is "one trillion, two hundred million, five hundred twenty-five thousand, five hundred twenty-one".