2825521 has 2 divisors, whose sum is σ = 2825522. Its totient is φ = 2825520.

The previous prime is 2825503. The next prime is 2825551. The reversal of 2825521 is 1255282.

2825521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2217121 + 608400 = 1489^2 + 780^2 .

It is a cyclic number.

It is not a de Polignac number, because 2825521 - 2⁵ = 2825489 is a prime.

2825521 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (2825551) 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 as a sum of consecutive naturals, namely, 1412760 + 1412761.

It is an arithmetic number, because the mean of its divisors is an integer number (1412761).

2^2825521 is an apocalyptic number.

It is an amenable number.

2825521 is a deficient number, since it is larger than the sum of its proper divisors (1).

2825521 is an equidigital number, since it uses as much as digits as its factorization.

2825521 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1600, while the sum is 25.

The square root of 2825521 is about 1680.9286124045. The cubic root of 2825521 is about 141.3729042267.

The spelling of 2825521 in words is "two million, eight hundred twenty-five thousand, five hundred twenty-one".