25241917 has 2 divisors, whose sum is σ = 25241918. Its totient is φ = 25241916.

The previous prime is 25241873. The next prime is 25241921. The reversal of 25241917 is 71914252.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12809241 + 12432676 = 3579^2 + 3526^2 .

It is a cyclic number.

It is not a de Polignac number, because 25241917 - 2¹¹ = 25239869 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25241927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12620958 + 12620959.

It is an arithmetic number, because the mean of its divisors is an integer number (12620959).

Almost surely, 2^25241917 is an apocalyptic number.

It is an amenable number.

25241917 is a deficient number, since it is larger than the sum of its proper divisors (1).

25241917 is an equidigital number, since it uses as much as digits as its factorization.

25241917 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5040, while the sum is 31.

The square root of 25241917 is about 5024.1334576223. The cubic root of 25241917 is about 293.3419073194.

The spelling of 25241917 in words is "twenty-five million, two hundred forty-one thousand, nine hundred seventeen".