41825981 has 2 divisors, whose sum is σ = 41825982. Its totient is φ = 41825980.

The previous prime is 41825977. The next prime is 41825989. The reversal of 41825981 is 18952814.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41088100 + 737881 = 6410^2 + 859^2 .

It is a cyclic number.

It is not a de Polignac number, because 41825981 - 2² = 41825977 is a prime.

It is a super-2 number, since 2×41825981² = 3498825373224722, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (41825989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20912990 + 20912991.

It is an arithmetic number, because the mean of its divisors is an integer number (20912991).

Almost surely, 2^41825981 is an apocalyptic number.

It is an amenable number.

41825981 is a deficient number, since it is larger than the sum of its proper divisors (1).

41825981 is an equidigital number, since it uses as much as digits as its factorization.

41825981 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23040, while the sum is 38.

The square root of 41825981 is about 6467.3009053236. The cubic root of 41825981 is about 347.1219247815.

The spelling of 41825981 in words is "forty-one million, eight hundred twenty-five thousand, nine hundred eighty-one".