25841 has 2 divisors, whose sum is σ = 25842. Its totient is φ = 25840.

The previous prime is 25819. The next prime is 25847. The reversal of 25841 is 14852.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19600 + 6241 = 140^2 + 79^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25841 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 25841.

It is not a weakly prime, because it can be changed into another prime (25847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12920 + 12921.

It is an arithmetic number, because the mean of its divisors is an integer number (12921).

2²⁵⁸⁴¹ is an apocalyptic number.

It is an amenable number.

25841 is a deficient number, since it is larger than the sum of its proper divisors (1).

25841 is an equidigital number, since it uses as much as digits as its factorization.

25841 is an evil number, because the sum of its binary digits is even.

The product of its digits is 320, while the sum is 20.

The square root of 25841 is about 160.7513608029. The cubic root of 25841 is about 29.5644478198.

It can be divided in two parts, 25 and 841, that multiplied together give a square (21025 = 145²).

The spelling of 25841 in words is "twenty-five thousand, eight hundred forty-one".