25555841 has 2 divisors, whose sum is σ = 25555842. Its totient is φ = 25555840.

The previous prime is 25555819. The next prime is 25555867. The reversal of 25555841 is 14855552.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12988816 + 12567025 = 3604^2 + 3545^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25555841 is a prime.

It is not a weakly prime, because it can be changed into another prime (25555801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12777920 + 12777921.

It is an arithmetic number, because the mean of its divisors is an integer number (12777921).

Almost surely, 2^25555841 is an apocalyptic number.

It is an amenable number.

25555841 is a deficient number, since it is larger than the sum of its proper divisors (1).

25555841 is an equidigital number, since it uses as much as digits as its factorization.

25555841 is an evil number, because the sum of its binary digits is even.

The product of its digits is 40000, while the sum is 35.

The square root of 25555841 is about 5055.2785284295. The cubic root of 25555841 is about 294.5529607481.

The spelling of 25555841 in words is "twenty-five million, five hundred fifty-five thousand, eight hundred forty-one".