25216019 has 2 divisors, whose sum is σ = 25216020. Its totient is φ = 25216018.

The previous prime is 25216001. The next prime is 25216031. The reversal of 25216019 is 91061252.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25216019 - 2⁸ = 25215763 is a prime.

It is a super-2 number, since 2×25216019² = 1271695228416722, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (25216039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12608009 + 12608010.

It is an arithmetic number, because the mean of its divisors is an integer number (12608010).

Almost surely, 2^25216019 is an apocalyptic number.

25216019 is a deficient number, since it is larger than the sum of its proper divisors (1).

25216019 is an equidigital number, since it uses as much as digits as its factorization.

25216019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 25216019 is about 5021.5554363165. Note that the first 3 decimals coincide. The cubic root of 25216019 is about 293.2415508589.

The spelling of 25216019 in words is "twenty-five million, two hundred sixteen thousand, nineteen".