2064425021 has 2 divisors, whose sum is σ = 2064425022. Its totient is φ = 2064425020.

The previous prime is 2064424987. The next prime is 2064425057. The reversal of 2064425021 is 1205244602.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1856748100 + 207676921 = 43090^2 + 14411^2 .

It is a cyclic number.

It is not a de Polignac number, because 2064425021 - 2²² = 2060230717 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2064425621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1032212510 + 1032212511.

It is an arithmetic number, because the mean of its divisors is an integer number (1032212511).

Almost surely, 2^2064425021 is an apocalyptic number.

It is an amenable number.

2064425021 is a deficient number, since it is larger than the sum of its proper divisors (1).

2064425021 is an equidigital number, since it uses as much as digits as its factorization.

2064425021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 2064425021 is about 45435.9441521798. The cubic root of 2064425021 is about 1273.3067402975.

Adding to 2064425021 its reverse (1205244602), we get a palindrome (3269669623).

The spelling of 2064425021 in words is "two billion, sixty-four million, four hundred twenty-five thousand, twenty-one".