1020525449 has 2 divisors, whose sum is σ = 1020525450. Its totient is φ = 1020525448.

The previous prime is 1020525439. The next prime is 1020525469. The reversal of 1020525449 is 9445250201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1005841225 + 14684224 = 31715^2 + 3832^2 .

It is a cyclic number.

It is not a de Polignac number, because 1020525449 - 2¹² = 1020521353 is a prime.

It is not a weakly prime, because it can be changed into another prime (1020525439) 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, 510262724 + 510262725.

It is an arithmetic number, because the mean of its divisors is an integer number (510262725).

Almost surely, 2^1020525449 is an apocalyptic number.

It is an amenable number.

1020525449 is a deficient number, since it is larger than the sum of its proper divisors (1).

1020525449 is an equidigital number, since it uses as much as digits as its factorization.

1020525449 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14400, while the sum is 32.

The square root of 1020525449 is about 31945.6640093769. The cubic root of 1020525449 is about 1006.7955324676.

The spelling of 1020525449 in words is "one billion, twenty million, five hundred twenty-five thousand, four hundred forty-nine".