920425217 has 8 divisors (see below), whose sum is σ = 928766976. Its totient is φ = 912115152.

The previous prime is 920425199. The next prime is 920425243. The reversal of 920425217 is 712524029.

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 920425217 - 2¹² = 920421121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (920425717) 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, 52478 + ... + 67784.

It is an arithmetic number, because the mean of its divisors is an integer number (116095872).

Almost surely, 2^920425217 is an apocalyptic number.

It is an amenable number.

920425217 is a deficient number, since it is larger than the sum of its proper divisors (8341759).

920425217 is a wasteful number, since it uses less digits than its factorization.

920425217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15847.

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 920425217 is about 30338.5104611284. The cubic root of 920425217 is about 972.7386441914.

The spelling of 920425217 in words is "nine hundred twenty million, four hundred twenty-five thousand, two hundred seventeen".