25780603 has 2 divisors, whose sum is σ = 25780604. Its totient is φ = 25780602.

The previous prime is 25780583. The next prime is 25780621. The reversal of 25780603 is 30608752.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25780603 is a prime.

It is not a weakly prime, because it can be changed into another prime (25780673) by changing a digit.

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

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12890301 + 12890302.

It is an arithmetic number, because the mean of its divisors is an integer number (12890302).

Almost surely, 2^25780603 is an apocalyptic number.

25780603 is a deficient number, since it is larger than the sum of its proper divisors (1).

25780603 is an equidigital number, since it uses as much as digits as its factorization.

25780603 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 25780603 is about 5077.4602903420. The cubic root of 25780603 is about 295.4139663631.

The spelling of 25780603 in words is "twenty-five million, seven hundred eighty thousand, six hundred three".