25254217 has 2 divisors, whose sum is σ = 25254218. Its totient is φ = 25254216.

The previous prime is 25254209. The next prime is 25254221. The reversal of 25254217 is 71245252.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21678336 + 3575881 = 4656^2 + 1891^2 .

It is a cyclic number.

It is not a de Polignac number, because 25254217 - 2³ = 25254209 is a prime.

It is not a weakly prime, because it can be changed into another prime (25254227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12627108 + 12627109.

It is an arithmetic number, because the mean of its divisors is an integer number (12627109).

Almost surely, 2^25254217 is an apocalyptic number.

It is an amenable number.

25254217 is a deficient number, since it is larger than the sum of its proper divisors (1).

25254217 is an equidigital number, since it uses as much as digits as its factorization.

25254217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5600, while the sum is 28.

The square root of 25254217 is about 5025.3574002254. The cubic root of 25254217 is about 293.3895465902.

Adding to 25254217 its reverse (71245252), we get a palindrome (96499469).

The spelling of 25254217 in words is "twenty-five million, two hundred fifty-four thousand, two hundred seventeen".