26256019 has 2 divisors, whose sum is σ = 26256020. Its totient is φ = 26256018.

The previous prime is 26256017. The next prime is 26256053. The reversal of 26256019 is 91065262.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 26256019 - 2¹ = 26256017 is a prime.

It is a super-2 number, since 2×26256019² = 1378757067456722, which contains 22 as substring.

Together with 26256017, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (26256017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13128009 + 13128010.

It is an arithmetic number, because the mean of its divisors is an integer number (13128010).

Almost surely, 2^26256019 is an apocalyptic number.

26256019 is a deficient number, since it is larger than the sum of its proper divisors (1).

26256019 is an equidigital number, since it uses as much as digits as its factorization.

26256019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 26256019 is about 5124.0627435659. The cubic root of 26256019 is about 297.2188111189.

The spelling of 26256019 in words is "twenty-six million, two hundred fifty-six thousand, nineteen".