426625819 has 2 divisors, whose sum is σ = 426625820. Its totient is φ = 426625818.

The previous prime is 426625817. The next prime is 426625831. The reversal of 426625819 is 918526624.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 426625819 - 2¹ = 426625817 is a prime.

It is a super-2 number, since 2×426625819² = 364019178874841522, which contains 22 as substring.

Together with 426625817, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (426625811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213312909 + 213312910.

It is an arithmetic number, because the mean of its divisors is an integer number (213312910).

Almost surely, 2^426625819 is an apocalyptic number.

426625819 is a deficient number, since it is larger than the sum of its proper divisors (1).

426625819 is an equidigital number, since it uses as much as digits as its factorization.

426625819 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 207360, while the sum is 43.

The square root of 426625819 is about 20654.9223915269. The cubic root of 426625819 is about 752.8047978843.

The spelling of 426625819 in words is "four hundred twenty-six million, six hundred twenty-five thousand, eight hundred nineteen".