425066819 has 2 divisors, whose sum is σ = 425066820. Its totient is φ = 425066818.

The previous prime is 425066783. The next prime is 425066839. The reversal of 425066819 is 918660524.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 425066819 - 2¹² = 425062723 is a prime.

It is a super-2 number, since 2×425066819² = 361363601229557522, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (425066839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212533409 + 212533410.

It is an arithmetic number, because the mean of its divisors is an integer number (212533410).

Almost surely, 2^425066819 is an apocalyptic number.

425066819 is a deficient number, since it is larger than the sum of its proper divisors (1).

425066819 is an equidigital number, since it uses as much as digits as its factorization.

425066819 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 103680, while the sum is 41.

The square root of 425066819 is about 20617.1486631881. The cubic root of 425066819 is about 751.8866981433.

The spelling of 425066819 in words is "four hundred twenty-five million, sixty-six thousand, eight hundred nineteen".