2425191421 has 2 divisors, whose sum is σ = 2425191422. Its totient is φ = 2425191420.

The previous prime is 2425191413. The next prime is 2425191449. The reversal of 2425191421 is 1241915242.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1414587321 + 1010604100 = 37611^2 + 31790^2 .

It is a cyclic number.

It is not a de Polignac number, because 2425191421 - 2³ = 2425191413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2425141421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1212595710 + 1212595711.

It is an arithmetic number, because the mean of its divisors is an integer number (1212595711).

Almost surely, 2^2425191421 is an apocalyptic number.

It is an amenable number.

2425191421 is a deficient number, since it is larger than the sum of its proper divisors (1).

2425191421 is an equidigital number, since it uses as much as digits as its factorization.

2425191421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5760, while the sum is 31.

The square root of 2425191421 is about 49246.2325564098. The cubic root of 2425191421 is about 1343.5340404887.

The spelling of 2425191421 in words is "two billion, four hundred twenty-five million, one hundred ninety-one thousand, four hundred twenty-one".