249999750019 has 2 divisors, whose sum is σ = 249999750020. Its totient is φ = 249999750018.

The previous prime is 249999749971. The next prime is 249999750029. The reversal of 249999750019 is 910057999942.

249999750019 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 is a cyclic number.

It is not a de Polignac number, because 249999750019 - 2¹⁵ = 249999717251 is a prime.

It is a super-2 number, since 2×249999750019² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (249999750029) 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, 124999875009 + 124999875010.

It is an arithmetic number, because the mean of its divisors is an integer number (124999875010).

Almost surely, 2^249999750019 is an apocalyptic number.

249999750019 is a deficient number, since it is larger than the sum of its proper divisors (1).

249999750019 is an equidigital number, since it uses as much as digits as its factorization.

249999750019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16533720, while the sum is 64.

The spelling of 249999750019 in words is "two hundred forty-nine billion, nine hundred ninety-nine million, seven hundred fifty thousand, nineteen".