25166231 has 2 divisors, whose sum is σ = 25166232. Its totient is φ = 25166230.

The previous prime is 25166201. The next prime is 25166257. The reversal of 25166231 is 13266152.

It is an a-pointer prime, because the next prime (25166257) can be obtained adding 25166231 to its sum of digits (26).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25166231 - 2¹⁴ = 25149847 is a prime.

It is a super-2 number, since 2×25166231² = 1266678365490722, which contains 22 as substring.

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 25166231.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25166201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12583115 + 12583116.

It is an arithmetic number, because the mean of its divisors is an integer number (12583116).

Almost surely, 2^25166231 is an apocalyptic number.

25166231 is a deficient number, since it is larger than the sum of its proper divisors (1).

25166231 is an equidigital number, since it uses as much as digits as its factorization.

25166231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2160, while the sum is 26.

The square root of 25166231 is about 5016.5955587430. The cubic root of 25166231 is about 293.0484258740.

The spelling of 25166231 in words is "twenty-five million, one hundred sixty-six thousand, two hundred thirty-one".