25652171 has 2 divisors, whose sum is σ = 25652172. Its totient is φ = 25652170.

The previous prime is 25652149. The next prime is 25652173. The reversal of 25652171 is 17125652.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25652171 is a prime.

Together with 25652173, 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 (25652173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12826085 + 12826086.

It is an arithmetic number, because the mean of its divisors is an integer number (12826086).

Almost surely, 2^25652171 is an apocalyptic number.

25652171 is a deficient number, since it is larger than the sum of its proper divisors (1).

25652171 is an equidigital number, since it uses as much as digits as its factorization.

25652171 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4200, while the sum is 29.

The square root of 25652171 is about 5064.7972318741. The cubic root of 25652171 is about 294.9225919661.

The spelling of 25652171 in words is "twenty-five million, six hundred fifty-two thousand, one hundred seventy-one".