25704571 has 2 divisors, whose sum is σ = 25704572. Its totient is φ = 25704570.

The previous prime is 25704557. The next prime is 25704599. The reversal of 25704571 is 17540752.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25704571 - 2¹⁵ = 25671803 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (25704521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12852285 + 12852286.

It is an arithmetic number, because the mean of its divisors is an integer number (12852286).

Almost surely, 2^25704571 is an apocalyptic number.

25704571 is a deficient number, since it is larger than the sum of its proper divisors (1).

25704571 is an equidigital number, since it uses as much as digits as its factorization.

25704571 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9800, while the sum is 31.

The square root of 25704571 is about 5069.9675541368. The cubic root of 25704571 is about 295.1232693680.

The spelling of 25704571 in words is "twenty-five million, seven hundred four thousand, five hundred seventy-one".