25420379 has 2 divisors, whose sum is σ = 25420380. Its totient is φ = 25420378.

The previous prime is 25420361. The next prime is 25420391. The reversal of 25420379 is 97302452.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25420379 - 2¹² = 25416283 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (25420319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12710189 + 12710190.

It is an arithmetic number, because the mean of its divisors is an integer number (12710190).

Almost surely, 2^25420379 is an apocalyptic number.

25420379 is a deficient number, since it is larger than the sum of its proper divisors (1).

25420379 is an equidigital number, since it uses as much as digits as its factorization.

25420379 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 25420379 is about 5041.8626518381. The cubic root of 25420379 is about 294.0315999477.

The spelling of 25420379 in words is "twenty-five million, four hundred twenty thousand, three hundred seventy-nine".