1025864519 has 2 divisors, whose sum is σ = 1025864520. Its totient is φ = 1025864518.

The previous prime is 1025864513. The next prime is 1025864527. The reversal of 1025864519 is 9154685201.

It is a weak prime.

It is an emirp because it is prime and its reverse (9154685201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1025864519 - 2⁴ = 1025864503 is a prime.

It is a super-3 number, since 3×1025864519³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1025864513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 512932259 + 512932260.

It is an arithmetic number, because the mean of its divisors is an integer number (512932260).

Almost surely, 2^1025864519 is an apocalyptic number.

1025864519 is a deficient number, since it is larger than the sum of its proper divisors (1).

1025864519 is an equidigital number, since it uses as much as digits as its factorization.

1025864519 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 86400, while the sum is 41.

The square root of 1025864519 is about 32029.1198599025. The cubic root of 1025864519 is about 1008.5482259539.

The spelling of 1025864519 in words is "one billion, twenty-five million, eight hundred sixty-four thousand, five hundred nineteen".