25117019 has 2 divisors, whose sum is σ = 25117020. Its totient is φ = 25117018.

The previous prime is 25117013. The next prime is 25117021. The reversal of 25117019 is 91071152.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25117019 - 2⁴ = 25117003 is a prime.

It is a super-2 number, since 2×25117019² = 1261729286892722, which contains 22 as substring.

Together with 25117021, 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 (25117013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12558509 + 12558510.

It is an arithmetic number, because the mean of its divisors is an integer number (12558510).

Almost surely, 2^25117019 is an apocalyptic number.

25117019 is a deficient number, since it is larger than the sum of its proper divisors (1).

25117019 is an equidigital number, since it uses as much as digits as its factorization.

25117019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 630, while the sum is 26.

The square root of 25117019 is about 5011.6882385081. The cubic root of 25117019 is about 292.8572846888.

The spelling of 25117019 in words is "twenty-five million, one hundred seventeen thousand, nineteen".