25381441 has 2 divisors, whose sum is σ = 25381442. Its totient is φ = 25381440.

The previous prime is 25381423. The next prime is 25381451. The reversal of 25381441 is 14418352.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17977600 + 7403841 = 4240^2 + 2721^2 .

It is a cyclic number.

It is not a de Polignac number, because 25381441 - 2¹⁹ = 24857153 is a prime.

It is not a weakly prime, because it can be changed into another prime (25381451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12690720 + 12690721.

It is an arithmetic number, because the mean of its divisors is an integer number (12690721).

Almost surely, 2^25381441 is an apocalyptic number.

It is an amenable number.

25381441 is a deficient number, since it is larger than the sum of its proper divisors (1).

25381441 is an equidigital number, since it uses as much as digits as its factorization.

25381441 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3840, while the sum is 28.

The square root of 25381441 is about 5037.9997022628. Note that the first 3 decimals coincide. The cubic root of 25381441 is about 293.8813943045.

Adding to 25381441 its reverse (14418352), we get a palindrome (39799793).

The spelling of 25381441 in words is "twenty-five million, three hundred eighty-one thousand, four hundred forty-one".