825460561 has 2 divisors, whose sum is σ = 825460562. Its totient is φ = 825460560.

The previous prime is 825460549. The next prime is 825460579. The reversal of 825460561 is 165064528.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 764854336 + 60606225 = 27656^2 + 7785^2 .

It is a cyclic number.

It is not a de Polignac number, because 825460561 - 2⁹ = 825460049 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 825460561.

It is not a weakly prime, because it can be changed into another prime (825467561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 412730280 + 412730281.

It is an arithmetic number, because the mean of its divisors is an integer number (412730281).

Almost surely, 2^825460561 is an apocalyptic number.

It is an amenable number.

825460561 is a deficient number, since it is larger than the sum of its proper divisors (1).

825460561 is an equidigital number, since it uses as much as digits as its factorization.

825460561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 57600, while the sum is 37.

The square root of 825460561 is about 28730.8294520016. The cubic root of 825460561 is about 938.0632224773.

The spelling of 825460561 in words is "eight hundred twenty-five million, four hundred sixty thousand, five hundred sixty-one".