425017217 has 4 divisors (see below), whose sum is σ = 425058480. Its totient is φ = 424975956.

The previous prime is 425017183. The next prime is 425017249. The reversal of 425017217 is 712710524.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 425017217 - 2⁸ = 425016961 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 425017217.

It is not an unprimeable number, because it can be changed into a prime (425017267) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9134 + ... + 30552.

It is an arithmetic number, because the mean of its divisors is an integer number (106264620).

Almost surely, 2^425017217 is an apocalyptic number.

It is an amenable number.

425017217 is a deficient number, since it is larger than the sum of its proper divisors (41263).

425017217 is a wasteful number, since it uses less digits than its factorization.

425017217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41262.

The product of its (nonzero) digits is 3920, while the sum is 29.

The square root of 425017217 is about 20615.9456974450. The cubic root of 425017217 is about 751.8574505575.

The spelling of 425017217 in words is "four hundred twenty-five million, seventeen thousand, two hundred seventeen".