25821127 has 2 divisors, whose sum is σ = 25821128. Its totient is φ = 25821126.

The previous prime is 25821101. The next prime is 25821137. The reversal of 25821127 is 72112852.

25821127 is nontrivially palindromic in base 14.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25821127 - 2¹⁹ = 25296839 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 25821095 and 25821104.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25821137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12910563 + 12910564.

It is an arithmetic number, because the mean of its divisors is an integer number (12910564).

Almost surely, 2^25821127 is an apocalyptic number.

25821127 is a deficient number, since it is larger than the sum of its proper divisors (1).

25821127 is an equidigital number, since it uses as much as digits as its factorization.

25821127 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2240, while the sum is 28.

The square root of 25821127 is about 5081.4493011345. The cubic root of 25821127 is about 295.5686703801.

Adding to 25821127 its reverse (72112852), we get a palindrome (97933979).

The spelling of 25821127 in words is "twenty-five million, eight hundred twenty-one thousand, one hundred twenty-seven".