25485571 has 2 divisors, whose sum is σ = 25485572. Its totient is φ = 25485570.

The previous prime is 25485569. The next prime is 25485589. The reversal of 25485571 is 17558452.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25485571 - 2¹ = 25485569 is a prime.

Together with 25485569, it forms a pair of twin primes.

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 25485571.

It is not a weakly prime, because it can be changed into another prime (25485371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12742785 + 12742786.

It is an arithmetic number, because the mean of its divisors is an integer number (12742786).

Almost surely, 2^25485571 is an apocalyptic number.

25485571 is a deficient number, since it is larger than the sum of its proper divisors (1).

25485571 is an equidigital number, since it uses as much as digits as its factorization.

25485571 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 56000, while the sum is 37.

The square root of 25485571 is about 5048.3235831313. The cubic root of 25485571 is about 294.2827389404.

The spelling of 25485571 in words is "twenty-five million, four hundred eighty-five thousand, five hundred seventy-one".