25166971 has 2 divisors, whose sum is σ = 25166972. Its totient is φ = 25166970.

The previous prime is 25166929. The next prime is 25167013. The reversal of 25166971 is 17966152.

It is a balanced prime because it is at equal distance from previous prime (25166929) and next prime (25167013).

It is a cyclic number.

It is not a de Polignac number, because 25166971 - 2⁹ = 25166459 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25166971.

It is not a weakly prime, because it can be changed into another prime (5166971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12583485 + 12583486.

It is an arithmetic number, because the mean of its divisors is an integer number (12583486).

Almost surely, 2^25166971 is an apocalyptic number.

25166971 is a deficient number, since it is larger than the sum of its proper divisors (1).

25166971 is an equidigital number, since it uses as much as digits as its factorization.

25166971 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 22680, while the sum is 37.

The square root of 25166971 is about 5016.6693133991. The cubic root of 25166971 is about 293.0512981583.

The spelling of 25166971 in words is "twenty-five million, one hundred sixty-six thousand, nine hundred seventy-one".