25723171 has 2 divisors, whose sum is σ = 25723172. Its totient is φ = 25723170.

The previous prime is 25723157. The next prime is 25723189. The reversal of 25723171 is 17132752.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25723171 - 2⁷ = 25723043 is a prime.

It is not a weakly prime, because it can be changed into another prime (25723141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12861585 + 12861586.

It is an arithmetic number, because the mean of its divisors is an integer number (12861586).

Almost surely, 2^25723171 is an apocalyptic number.

25723171 is a deficient number, since it is larger than the sum of its proper divisors (1).

25723171 is an equidigital number, since it uses as much as digits as its factorization.

25723171 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2940, while the sum is 28.

The square root of 25723171 is about 5071.8015536888. The cubic root of 25723171 is about 295.1944365975.

The spelling of 25723171 in words is "twenty-five million, seven hundred twenty-three thousand, one hundred seventy-one".