25002253217 has 2 divisors, whose sum is σ = 25002253218. Its totient is φ = 25002253216.

The previous prime is 25002253153. The next prime is 25002253229. The reversal of 25002253217 is 71235220052.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24635185936 + 367067281 = 156956^2 + 19159^2 .

It is a cyclic number.

It is not a de Polignac number, because 25002253217 - 2⁶ = 25002253153 is a prime.

It is a super-2 number, since 2×25002253217² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 25002253217.

It is not a weakly prime, because it can be changed into another prime (25002253267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12501126608 + 12501126609.

It is an arithmetic number, because the mean of its divisors is an integer number (12501126609).

Almost surely, 2^25002253217 is an apocalyptic number.

It is an amenable number.

25002253217 is a deficient number, since it is larger than the sum of its proper divisors (1).

25002253217 is an equidigital number, since it uses as much as digits as its factorization.

25002253217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8400, while the sum is 29.

Adding to 25002253217 its reverse (71235220052), we get a palindrome (96237473269).

The spelling of 25002253217 in words is "twenty-five billion, two million, two hundred fifty-three thousand, two hundred seventeen".