25334952217 has 2 divisors, whose sum is σ = 25334952218. Its totient is φ = 25334952216.

The previous prime is 25334952197. The next prime is 25334952233. The reversal of 25334952217 is 71225943352.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17146331136 + 8188621081 = 130944^2 + 90491^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25334952217 is a prime.

It is not a weakly prime, because it can be changed into another prime (25334958217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12667476108 + 12667476109.

It is an arithmetic number, because the mean of its divisors is an integer number (12667476109).

Almost surely, 2^25334952217 is an apocalyptic number.

It is an amenable number.

25334952217 is a deficient number, since it is larger than the sum of its proper divisors (1).

25334952217 is an equidigital number, since it uses as much as digits as its factorization.

25334952217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 453600, while the sum is 43.

The spelling of 25334952217 in words is "twenty-five billion, three hundred thirty-four million, nine hundred fifty-two thousand, two hundred seventeen".