25265171 has 2 divisors, whose sum is σ = 25265172. Its totient is φ = 25265170.

The previous prime is 25265147. The next prime is 25265183. The reversal of 25265171 is 17156252.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25265171 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (25265101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12632585 + 12632586.

It is an arithmetic number, because the mean of its divisors is an integer number (12632586).

Almost surely, 2^25265171 is an apocalyptic number.

25265171 is a deficient number, since it is larger than the sum of its proper divisors (1).

25265171 is an equidigital number, since it uses as much as digits as its factorization.

25265171 is an evil number, because the sum of its binary digits is even.

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

The square root of 25265171 is about 5026.4471548003. The cubic root of 25265171 is about 293.4319596328.

The spelling of 25265171 in words is "twenty-five million, two hundred sixty-five thousand, one hundred seventy-one".