4225513021 has 2 divisors, whose sum is σ = 4225513022. Its totient is φ = 4225513020.

The previous prime is 4225513007. The next prime is 4225513027. The reversal of 4225513021 is 1203155224.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3394344121 + 831168900 = 58261^2 + 28830^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4225513021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4225513027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2112756510 + 2112756511.

It is an arithmetic number, because the mean of its divisors is an integer number (2112756511).

Almost surely, 2^4225513021 is an apocalyptic number.

It is an amenable number.

4225513021 is a deficient number, since it is larger than the sum of its proper divisors (1).

4225513021 is an equidigital number, since it uses as much as digits as its factorization.

4225513021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 4225513021 is about 65003.9461955965. The cubic root of 4225513021 is about 1616.6889928165.

Adding to 4225513021 its reverse (1203155224), we get a palindrome (5428668245).

The spelling of 4225513021 in words is "four billion, two hundred twenty-five million, five hundred thirteen thousand, twenty-one".