25442603 has 2 divisors, whose sum is σ = 25442604. Its totient is φ = 25442602.

The previous prime is 25442581. The next prime is 25442609. The reversal of 25442603 is 30624452.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25442603 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (25442609) by changing a digit.

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

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12721301 + 12721302.

It is an arithmetic number, because the mean of its divisors is an integer number (12721302).

Almost surely, 2^25442603 is an apocalyptic number.

25442603 is a deficient number, since it is larger than the sum of its proper divisors (1).

25442603 is an equidigital number, since it uses as much as digits as its factorization.

25442603 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5760, while the sum is 26.

The square root of 25442603 is about 5044.0661177268. The cubic root of 25442603 is about 294.1172615987.

The spelling of 25442603 in words is "twenty-five million, four hundred forty-two thousand, six hundred three".