425605667 has 2 divisors, whose sum is σ = 425605668. Its totient is φ = 425605666.

The previous prime is 425605637. The next prime is 425605669. The reversal of 425605667 is 766506524.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-425605667 is a prime.

It is a super-2 number, since 2×425605667² = 362280367565029778, which contains 22 as substring.

Together with 425605669, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (425605669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212802833 + 212802834.

It is an arithmetic number, because the mean of its divisors is an integer number (212802834).

Almost surely, 2^425605667 is an apocalyptic number.

425605667 is a deficient number, since it is larger than the sum of its proper divisors (1).

425605667 is an equidigital number, since it uses as much as digits as its factorization.

425605667 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 302400, while the sum is 41.

The square root of 425605667 is about 20630.2124807284. The cubic root of 425605667 is about 752.2042808109.

The spelling of 425605667 in words is "four hundred twenty-five million, six hundred five thousand, six hundred sixty-seven".