25680379 has 2 divisors, whose sum is σ = 25680380. Its totient is φ = 25680378.

The previous prime is 25680373. The next prime is 25680401. The reversal of 25680379 is 97308652.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25680379 is a prime.

It is not a weakly prime, because it can be changed into another prime (25680373) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12840189 + 12840190.

It is an arithmetic number, because the mean of its divisors is an integer number (12840190).

Almost surely, 2^25680379 is an apocalyptic number.

25680379 is a deficient number, since it is larger than the sum of its proper divisors (1).

25680379 is an equidigital number, since it uses as much as digits as its factorization.

25680379 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 90720, while the sum is 40.

The square root of 25680379 is about 5067.5811784322. The cubic root of 25680379 is about 295.0306546714.

The spelling of 25680379 in words is "twenty-five million, six hundred eighty thousand, three hundred seventy-nine".