25742291 has 2 divisors, whose sum is σ = 25742292. Its totient is φ = 25742290.

The previous prime is 25742279. The next prime is 25742293. The reversal of 25742291 is 19224752.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25742291 - 2¹⁰ = 25741267 is a prime.

Together with 25742293, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (25742293) 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, 12871145 + 12871146.

It is an arithmetic number, because the mean of its divisors is an integer number (12871146).

Almost surely, 2^25742291 is an apocalyptic number.

25742291 is a deficient number, since it is larger than the sum of its proper divisors (1).

25742291 is an equidigital number, since it uses as much as digits as its factorization.

25742291 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10080, while the sum is 32.

The square root of 25742291 is about 5073.6861353458. The cubic root of 25742291 is about 295.2675576989.

The spelling of 25742291 in words is "twenty-five million, seven hundred forty-two thousand, two hundred ninety-one".