25381841 has 2 divisors, whose sum is σ = 25381842. Its totient is φ = 25381840.

The previous prime is 25381813. The next prime is 25381847. The reversal of 25381841 is 14818352.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13719616 + 11662225 = 3704^2 + 3415^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25381841 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 25381798 and 25381807.

It is not a weakly prime, because it can be changed into another prime (25381847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12690920 + 12690921.

It is an arithmetic number, because the mean of its divisors is an integer number (12690921).

Almost surely, 2^25381841 is an apocalyptic number.

It is an amenable number.

25381841 is a deficient number, since it is larger than the sum of its proper divisors (1).

25381841 is an equidigital number, since it uses as much as digits as its factorization.

25381841 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7680, while the sum is 32.

The square root of 25381841 is about 5038.0394004017. The cubic root of 25381841 is about 293.8829381088.

The spelling of 25381841 in words is "twenty-five million, three hundred eighty-one thousand, eight hundred forty-one".