25126217 has 2 divisors, whose sum is σ = 25126218. Its totient is φ = 25126216.

The previous prime is 25126183. The next prime is 25126223. The reversal of 25126217 is 71262152.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24492601 + 633616 = 4949^2 + 796^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25126217 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (25126237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12563108 + 12563109.

It is an arithmetic number, because the mean of its divisors is an integer number (12563109).

Almost surely, 2^25126217 is an apocalyptic number.

It is an amenable number.

25126217 is a deficient number, since it is larger than the sum of its proper divisors (1).

25126217 is an equidigital number, since it uses as much as digits as its factorization.

25126217 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1680, while the sum is 26.

The square root of 25126217 is about 5012.6058093570. The cubic root of 25126217 is about 292.8930290122.

Adding to 25126217 its reverse (71262152), we get a palindrome (96388369).

The spelling of 25126217 in words is "twenty-five million, one hundred twenty-six thousand, two hundred seventeen".