25260019 has 2 divisors, whose sum is σ = 25260020. Its totient is φ = 25260018.

The previous prime is 25260017. The next prime is 25260023. The reversal of 25260019 is 91006252.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25260019 - 2¹ = 25260017 is a prime.

It is a super-2 number, since 2×25260019² = 1276137119760722, which contains 22 as substring.

Together with 25260017, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 25259975 and 25260002.

It is not a weakly prime, because it can be changed into another prime (25260017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12630009 + 12630010.

It is an arithmetic number, because the mean of its divisors is an integer number (12630010).

Almost surely, 2^25260019 is an apocalyptic number.

25260019 is a deficient number, since it is larger than the sum of its proper divisors (1).

25260019 is an equidigital number, since it uses as much as digits as its factorization.

25260019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 25260019 is about 5025.9346394477. The cubic root of 25260019 is about 293.4120130138.

The spelling of 25260019 in words is "twenty-five million, two hundred sixty thousand, nineteen".