25397741 has 2 divisors, whose sum is σ = 25397742. Its totient is φ = 25397740.

The previous prime is 25397731. The next prime is 25397753. The reversal of 25397741 is 14779352.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24542116 + 855625 = 4954^2 + 925^2 .

It is a cyclic number.

It is not a de Polignac number, because 25397741 - 2¹⁰ = 25396717 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is equal to p_1589186 and since 25397741 and 1589186 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 25397695 and 25397704.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25397731) 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, 12698870 + 12698871.

It is an arithmetic number, because the mean of its divisors is an integer number (12698871).

Almost surely, 2^25397741 is an apocalyptic number.

It is an amenable number.

25397741 is a deficient number, since it is larger than the sum of its proper divisors (1).

25397741 is an equidigital number, since it uses as much as digits as its factorization.

25397741 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 52920, while the sum is 38.

The square root of 25397741 is about 5039.6171481572. The cubic root of 25397741 is about 293.9442912016.

The spelling of 25397741 in words is "twenty-five million, three hundred ninety-seven thousand, seven hundred forty-one".