25042571 has 2 divisors, whose sum is σ = 25042572. Its totient is φ = 25042570.

The previous prime is 25042543. The next prime is 25042603. The reversal of 25042571 is 17524052.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25042571 - 2¹⁴ = 25026187 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25042571.

It is not a weakly prime, because it can be changed into another prime (25042541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12521285 + 12521286.

It is an arithmetic number, because the mean of its divisors is an integer number (12521286).

Almost surely, 2^25042571 is an apocalyptic number.

25042571 is a deficient number, since it is larger than the sum of its proper divisors (1).

25042571 is an equidigital number, since it uses as much as digits as its factorization.

25042571 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2800, while the sum is 26.

The square root of 25042571 is about 5004.2552892513. The cubic root of 25042571 is about 292.5676508484.

The spelling of 25042571 in words is "twenty-five million, forty-two thousand, five hundred seventy-one".