425311221 has 8 divisors (see below), whose sum is σ = 567369504. Its totient is φ = 283396880.

The previous prime is 425311207. The next prime is 425311241. The reversal of 425311221 is 122113524.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 425311221 - 2¹⁵ = 425278453 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (425311241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28890 + ... + 41051.

It is an arithmetic number, because the mean of its divisors is an integer number (70921188).

Almost surely, 2^425311221 is an apocalyptic number.

It is an amenable number.

425311221 is a deficient number, since it is larger than the sum of its proper divisors (142058283).

425311221 is a wasteful number, since it uses less digits than its factorization.

425311221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71971.

The product of its digits is 480, while the sum is 21.

The square root of 425311221 is about 20623.0749647088. The cubic root of 425311221 is about 752.0307754164.

Adding to 425311221 its reverse (122113524), we get a palindrome (547424745).

The spelling of 425311221 in words is "four hundred twenty-five million, three hundred eleven thousand, two hundred twenty-one".