1025864513 has 2 divisors, whose sum is σ = 1025864514. Its totient is φ = 1025864512.

The previous prime is 1025864503. The next prime is 1025864519. The reversal of 1025864513 is 3154685201.

1025864513 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 906792769 + 119071744 = 30113^2 + 10912^2 .

It is a cyclic number.

It is not a de Polignac number, because 1025864513 - 2¹⁴ = 1025848129 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1025864519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 512932256 + 512932257.

It is an arithmetic number, because the mean of its divisors is an integer number (512932257).

Almost surely, 2^1025864513 is an apocalyptic number.

It is an amenable number.

1025864513 is a deficient number, since it is larger than the sum of its proper divisors (1).

1025864513 is an equidigital number, since it uses as much as digits as its factorization.

1025864513 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28800, while the sum is 35.

The square root of 1025864513 is about 32029.1197662377. The cubic root of 1025864513 is about 1008.5482239877.

The spelling of 1025864513 in words is "one billion, twenty-five million, eight hundred sixty-four thousand, five hundred thirteen".