1825081 has 2 divisors, whose sum is σ = 1825082. Its totient is φ = 1825080.

The previous prime is 1825079. The next prime is 1825129. The reversal of 1825081 is 1805281.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1357225 + 467856 = 1165^2 + 684^2 .

It is a cyclic number.

It is not a de Polignac number, because 1825081 - 2¹ = 1825079 is a prime.

It is a super-2 number, since 2×1825081² = 6661841313122, which contains 22 as substring.

Together with 1825079, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1825381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 912540 + 912541.

It is an arithmetic number, because the mean of its divisors is an integer number (912541).

2^1825081 is an apocalyptic number.

It is an amenable number.

1825081 is a deficient number, since it is larger than the sum of its proper divisors (1).

1825081 is an equidigital number, since it uses as much as digits as its factorization.

1825081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 640, while the sum is 25.

The square root of 1825081 is about 1350.9555877230. The cubic root of 1825081 is about 122.2064273743.

The spelling of 1825081 in words is "one million, eight hundred twenty-five thousand, eighty-one".