250000019 has 2 divisors, whose sum is σ = 250000020. Its totient is φ = 250000018.

The previous prime is 250000013. The next prime is 250000073. The reversal of 250000019 is 910000052.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 250000019 - 2¹² = 249995923 is a prime.

It is a super-2 number, since 2×250000019² = 125000019000000722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 249999961 and 250000006.

It is not a weakly prime, because it can be changed into another prime (250000013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 125000009 + 125000010.

It is an arithmetic number, because the mean of its divisors is an integer number (125000010).

Almost surely, 2^250000019 is an apocalyptic number.

250000019 is a deficient number, since it is larger than the sum of its proper divisors (1).

250000019 is an equidigital number, since it uses as much as digits as its factorization.

250000019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 90, while the sum is 17.

The square root of 250000019 is about 15811.3889016746. The cubic root of 250000019 is about 629.9605409064.

The spelling of 250000019 in words is "two hundred fifty million, nineteen", and thus it is an aban number.