25217938741 has 2 divisors, whose sum is σ = 25217938742. Its totient is φ = 25217938740.

The previous prime is 25217938699. The next prime is 25217938747. The reversal of 25217938741 is 14783971252.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23430424900 + 1787513841 = 153070^2 + 42279^2 .

It is a cyclic number.

It is not a de Polignac number, because 25217938741 - 2¹¹ = 25217936693 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25217938747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12608969370 + 12608969371.

It is an arithmetic number, because the mean of its divisors is an integer number (12608969371).

Almost surely, 2^25217938741 is an apocalyptic number.

It is an amenable number.

25217938741 is a deficient number, since it is larger than the sum of its proper divisors (1).

25217938741 is an equidigital number, since it uses as much as digits as its factorization.

25217938741 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 846720, while the sum is 49.

The spelling of 25217938741 in words is "twenty-five billion, two hundred seventeen million, nine hundred thirty-eight thousand, seven hundred forty-one".