425022221 has 8 divisors (see below), whose sum is σ = 477617280. Its totient is φ = 375270192.

The previous prime is 425022217. The next prime is 425022223. The reversal of 425022221 is 122220524.

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 425022221 - 2² = 425022217 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 425022193 and 425022202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (425022223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 710441 + ... + 711038.

It is an arithmetic number, because the mean of its divisors is an integer number (59702160).

Almost surely, 2^425022221 is an apocalyptic number.

It is an amenable number.

425022221 is a deficient number, since it is larger than the sum of its proper divisors (52595059).

425022221 is a wasteful number, since it uses less digits than its factorization.

425022221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1421515.

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 425022221 is about 20616.0670594563. The cubic root of 425022221 is about 751.8604012457.

Adding to 425022221 its reverse (122220524), we get a palindrome (547242745).

The spelling of 425022221 in words is "four hundred twenty-five million, twenty-two thousand, two hundred twenty-one".