4423025021 has 8 divisors (see below), whose sum is σ = 4527688704. Its totient is φ = 4318443360.

The previous prime is 4423025011. The next prime is 4423025053. The reversal of 4423025021 is 1205203244.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4423025021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4423025011) 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, 96401 + ... + 134681.

It is an arithmetic number, because the mean of its divisors is an integer number (565961088).

Almost surely, 2^4423025021 is an apocalyptic number.

It is an amenable number.

4423025021 is a deficient number, since it is larger than the sum of its proper divisors (104663683).

4423025021 is a wasteful number, since it uses less digits than its factorization.

4423025021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41011.

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 4423025021 is about 66505.8269702738. The cubic root of 4423025021 is about 1641.4958864126.

Adding to 4423025021 its reverse (1205203244), we get a palindrome (5628228265).

The spelling of 4423025021 in words is "four billion, four hundred twenty-three million, twenty-five thousand, twenty-one".