4225021921 has 8 divisors (see below), whose sum is σ = 4323844800. Its totient is φ = 4127291280.

The previous prime is 4225021907. The next prime is 4225021939. The reversal of 4225021921 is 1291205224.

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 4225021921 - 2⁷ = 4225021793 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 4225021921.

It is not an unprimeable number, because it can be changed into a prime (4225021991) 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, 265231 + ... + 280708.

It is an arithmetic number, because the mean of its divisors is an integer number (540480600).

Almost surely, 2^4225021921 is an apocalyptic number.

It is an amenable number.

4225021921 is a deficient number, since it is larger than the sum of its proper divisors (98822879).

4225021921 is a wasteful number, since it uses less digits than its factorization.

4225021921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 546119.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 4225021921 is about 65000.1686228582. The cubic root of 4225021921 is about 1616.6263584712.

The spelling of 4225021921 in words is "four billion, two hundred twenty-five million, twenty-one thousand, nine hundred twenty-one".