425685419 has 2 divisors, whose sum is σ = 425685420. Its totient is φ = 425685418.

The previous prime is 425685383. The next prime is 425685427. The reversal of 425685419 is 914586524.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 425685419 - 2⁸ = 425685163 is a prime.

It is a super-2 number, since 2×425685419² = 362416151898411122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 425685419.

It is not a weakly prime, because it can be changed into another prime (425685499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212842709 + 212842710.

It is an arithmetic number, because the mean of its divisors is an integer number (212842710).

Almost surely, 2^425685419 is an apocalyptic number.

425685419 is a deficient number, since it is larger than the sum of its proper divisors (1).

425685419 is an equidigital number, since it uses as much as digits as its factorization.

425685419 is an evil number, because the sum of its binary digits is even.

The product of its digits is 345600, while the sum is 44.

The square root of 425685419 is about 20632.1452835133. The cubic root of 425685419 is about 752.2512617401.

The spelling of 425685419 in words is "four hundred twenty-five million, six hundred eighty-five thousand, four hundred nineteen".