2825561 has 2 divisors, whose sum is σ = 2825562. Its totient is φ = 2825560.

The previous prime is 2825551. The next prime is 2825567. The reversal of 2825561 is 1655282.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2785561 + 40000 = 1669^2 + 200^2 .

It is a cyclic number.

It is not a de Polignac number, because 2825561 - 2⁶ = 2825497 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2825567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1412780 + 1412781.

It is an arithmetic number, because the mean of its divisors is an integer number (1412781).

2^2825561 is an apocalyptic number.

It is an amenable number.

2825561 is a deficient number, since it is larger than the sum of its proper divisors (1).

2825561 is an equidigital number, since it uses as much as digits as its factorization.

2825561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4800, while the sum is 29.

The square root of 2825561 is about 1680.9405105476. The cubic root of 2825561 is about 141.3735713473.

The spelling of 2825561 in words is "two million, eight hundred twenty-five thousand, five hundred sixty-one".