25668229 has 2 divisors, whose sum is σ = 25668230. Its totient is φ = 25668228.

The previous prime is 25668211. The next prime is 25668233. The reversal of 25668229 is 92286652.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13432225 + 12236004 = 3665^2 + 3498^2 .

It is a cyclic number.

It is not a de Polignac number, because 25668229 - 2⁵ = 25668197 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25668191 and 25668200.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25668239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12834114 + 12834115.

It is an arithmetic number, because the mean of its divisors is an integer number (12834115).

Almost surely, 2^25668229 is an apocalyptic number.

It is an amenable number.

25668229 is a deficient number, since it is larger than the sum of its proper divisors (1).

25668229 is an equidigital number, since it uses as much as digits as its factorization.

25668229 is an evil number, because the sum of its binary digits is even.

The product of its digits is 103680, while the sum is 40.

The square root of 25668229 is about 5066.3822398236. The cubic root of 25668229 is about 294.9841186509.

The spelling of 25668229 in words is "twenty-five million, six hundred sixty-eight thousand, two hundred twenty-nine".