1025030561 has 2 divisors, whose sum is σ = 1025030562. Its totient is φ = 1025030560.

The previous prime is 1025030557. The next prime is 1025030651. The reversal of 1025030561 is 1650305201.

1025030561 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

Together with next prime (1025030651) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1009968400 + 15062161 = 31780^2 + 3881^2 .

It is an emirp because it is prime and its reverse (1650305201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1025030561 - 2² = 1025030557 is a prime.

It is not a weakly prime, because it can be changed into another prime (1025030551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 512515280 + 512515281.

It is an arithmetic number, because the mean of its divisors is an integer number (512515281).

Almost surely, 2^1025030561 is an apocalyptic number.

It is an amenable number.

1025030561 is a deficient number, since it is larger than the sum of its proper divisors (1).

1025030561 is an equidigital number, since it uses as much as digits as its factorization.

1025030561 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 1025030561 is about 32016.0984662404. The cubic root of 1025030561 is about 1008.2748581864.

Adding to 1025030561 its reverse (1650305201), we get a palindrome (2675335762).

The spelling of 1025030561 in words is "one billion, twenty-five million, thirty thousand, five hundred sixty-one".