515425019 has 2 divisors, whose sum is σ = 515425020. Its totient is φ = 515425018.

The previous prime is 515425007. The next prime is 515425021. The reversal of 515425019 is 910524515.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 515425019 - 2¹⁶ = 515359483 is a prime.

It is a super-2 number, since 2×515425019² = 531325900422300722, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 515425021, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (515425049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 257712509 + 257712510.

It is an arithmetic number, because the mean of its divisors is an integer number (257712510).

Almost surely, 2^515425019 is an apocalyptic number.

515425019 is a deficient number, since it is larger than the sum of its proper divisors (1).

515425019 is an equidigital number, since it uses as much as digits as its factorization.

515425019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9000, while the sum is 32.

The square root of 515425019 is about 22702.9737919947. The cubic root of 515425019 is about 801.7799010659.

The spelling of 515425019 in words is "five hundred fifteen million, four hundred twenty-five thousand, nineteen".