25065217 has 2 divisors, whose sum is σ = 25065218. Its totient is φ = 25065216.

The previous prime is 25065203. The next prime is 25065223. The reversal of 25065217 is 71256052.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19793601 + 5271616 = 4449^2 + 2296^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25065217 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (25065017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12532608 + 12532609.

It is an arithmetic number, because the mean of its divisors is an integer number (12532609).

Almost surely, 2^25065217 is an apocalyptic number.

It is an amenable number.

25065217 is a deficient number, since it is larger than the sum of its proper divisors (1).

25065217 is an equidigital number, since it uses as much as digits as its factorization.

25065217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4200, while the sum is 28.

The square root of 25065217 is about 5006.5174522816. The cubic root of 25065217 is about 292.6558139325.

The spelling of 25065217 in words is "twenty-five million, sixty-five thousand, two hundred seventeen".