25488217 has 2 divisors, whose sum is σ = 25488218. Its totient is φ = 25488216.

The previous prime is 25488181. The next prime is 25488223. The reversal of 25488217 is 71288452.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16613776 + 8874441 = 4076^2 + 2979^2 .

It is a cyclic number.

It is not a de Polignac number, because 25488217 - 2¹¹ = 25486169 is a prime.

It is a plaindrome in base 14.

It is not a weakly prime, because it can be changed into another prime (25288217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12744108 + 12744109.

It is an arithmetic number, because the mean of its divisors is an integer number (12744109).

Almost surely, 2^25488217 is an apocalyptic number.

It is an amenable number.

25488217 is a deficient number, since it is larger than the sum of its proper divisors (1).

25488217 is an equidigital number, since it uses as much as digits as its factorization.

25488217 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 35840, while the sum is 37.

The square root of 25488217 is about 5048.5856435243. The cubic root of 25488217 is about 294.2929230714.

The spelling of 25488217 in words is "twenty-five million, four hundred eighty-eight thousand, two hundred seventeen".