2421425509 has 2 divisors, whose sum is σ = 2421425510. Its totient is φ = 2421425508.

The previous prime is 2421425507. The next prime is 2421425537. The reversal of 2421425509 is 9055241242.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2259576225 + 161849284 = 47535^2 + 12722^2 .

It is a cyclic number.

It is not a de Polignac number, because 2421425509 - 2¹ = 2421425507 is a prime.

Together with 2421425507, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2421425507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1210712754 + 1210712755.

It is an arithmetic number, because the mean of its divisors is an integer number (1210712755).

Almost surely, 2^2421425509 is an apocalyptic number.

It is an amenable number.

2421425509 is a deficient number, since it is larger than the sum of its proper divisors (1).

2421425509 is an equidigital number, since it uses as much as digits as its factorization.

2421425509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28800, while the sum is 34.

The square root of 2421425509 is about 49207.9821675305. The cubic root of 2421425509 is about 1342.8382531925.

The spelling of 2421425509 in words is "two billion, four hundred twenty-one million, four hundred twenty-five thousand, five hundred nine".