25101217 has 2 divisors, whose sum is σ = 25101218. Its totient is φ = 25101216.

The previous prime is 25101199. The next prime is 25101221. The reversal of 25101217 is 71210152.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23001616 + 2099601 = 4796^2 + 1449^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25101217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25101194 and 25101203.

It is not a weakly prime, because it can be changed into another prime (25101247) 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, 12550608 + 12550609.

It is an arithmetic number, because the mean of its divisors is an integer number (12550609).

Almost surely, 2^25101217 is an apocalyptic number.

It is an amenable number.

25101217 is a deficient number, since it is larger than the sum of its proper divisors (1).

25101217 is an equidigital number, since it uses as much as digits as its factorization.

25101217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 140, while the sum is 19.

The square root of 25101217 is about 5010.1114758057. Note that the first 3 decimals coincide. The cubic root of 25101217 is about 292.7958561989.

Adding to 25101217 its reverse (71210152), we get a palindrome (96311369).

The spelling of 25101217 in words is "twenty-five million, one hundred one thousand, two hundred seventeen".