425217697 has 4 divisors (see below), whose sum is σ = 425291776. Its totient is φ = 425143620.

The previous prime is 425217673. The next prime is 425217713. The reversal of 425217697 is 796712524.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-425217697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (425217647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27633 + ... + 40174.

It is an arithmetic number, because the mean of its divisors is an integer number (106322944).

Almost surely, 2^425217697 is an apocalyptic number.

It is an amenable number.

425217697 is a deficient number, since it is larger than the sum of its proper divisors (74079).

425217697 is an equidigital number, since it uses as much as digits as its factorization.

425217697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74078.

The product of its digits is 211680, while the sum is 43.

The square root of 425217697 is about 20620.8073799257. The cubic root of 425217697 is about 751.9756486616.

The spelling of 425217697 in words is "four hundred twenty-five million, two hundred seventeen thousand, six hundred ninety-seven".