2081425 has 6 divisors (see below), whose sum is σ = 2580998. Its totient is φ = 1665120.

The previous prime is 2081423. The next prime is 2081437. The reversal of 2081425 is 5241802.

It can be written as a sum of positive squares in 3 ways, for example, as 419904 + 1661521 = 648^2 + 1289^2 .

It is not a de Polignac number, because 2081425 - 2¹ = 2081423 is a prime.

It is a Duffinian number.

2081425 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 2081396 and 2081405.

It is not an unprimeable number, because it can be changed into a prime (2081423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 41604 + ... + 41653.

2^2081425 is an apocalyptic number.

2081425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2081425 is a deficient number, since it is larger than the sum of its proper divisors (499573).

2081425 is an equidigital number, since it uses as much as digits as its factorization.

2081425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83267 (or 83262 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 2081425 is about 1442.7144554623. The cubic root of 2081425 is about 127.6792301837.

The spelling of 2081425 in words is "two million, eighty-one thousand, four hundred twenty-five".