2425530221 has 2 divisors, whose sum is σ = 2425530222. Its totient is φ = 2425530220.

The previous prime is 2425530169. The next prime is 2425530223. The reversal of 2425530221 is 1220355242.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2280062500 + 145467721 = 47750^2 + 12061^2 .

It is a cyclic number.

It is not a de Polignac number, because 2425530221 - 2⁶ = 2425530157 is a prime.

It is a Sophie Germain prime.

Together with 2425530223, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2425530223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1212765110 + 1212765111.

It is an arithmetic number, because the mean of its divisors is an integer number (1212765111).

Almost surely, 2^2425530221 is an apocalyptic number.

It is an amenable number.

2425530221 is a deficient number, since it is larger than the sum of its proper divisors (1).

2425530221 is an equidigital number, since it uses as much as digits as its factorization.

2425530221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 2425530221 is about 49249.6722933260. The cubic root of 2425530221 is about 1343.5966016174.

Adding to 2425530221 its reverse (1220355242), we get a palindrome (3645885463).

The spelling of 2425530221 in words is "two billion, four hundred twenty-five million, five hundred thirty thousand, two hundred twenty-one".