825850321 has 2 divisors, whose sum is σ = 825850322. Its totient is φ = 825850320.

The previous prime is 825850309. The next prime is 825850339. The reversal of 825850321 is 123058528.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 583705600 + 242144721 = 24160^2 + 15561^2 .

It is a cyclic number.

It is not a de Polignac number, because 825850321 - 2¹⁷ = 825719249 is a prime.

It is not a weakly prime, because it can be changed into another prime (825820321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 412925160 + 412925161.

It is an arithmetic number, because the mean of its divisors is an integer number (412925161).

Almost surely, 2^825850321 is an apocalyptic number.

It is an amenable number.

825850321 is a deficient number, since it is larger than the sum of its proper divisors (1).

825850321 is an equidigital number, since it uses as much as digits as its factorization.

825850321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19200, while the sum is 34.

The square root of 825850321 is about 28737.6116091787. The cubic root of 825850321 is about 938.2108418827.

The spelling of 825850321 in words is "eight hundred twenty-five million, eight hundred fifty thousand, three hundred twenty-one".