825235321 has 2 divisors, whose sum is σ = 825235322. Its totient is φ = 825235320.

The previous prime is 825235261. The next prime is 825235337. The reversal of 825235321 is 123532528.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 776235321 + 49000000 = 27861^2 + 7000^2 .

It is a cyclic number.

It is not a de Polignac number, because 825235321 - 2¹³ = 825227129 is a prime.

It is not a weakly prime, because it can be changed into another prime (825235391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 412617660 + 412617661.

It is an arithmetic number, because the mean of its divisors is an integer number (412617661).

Almost surely, 2^825235321 is an apocalyptic number.

It is an amenable number.

825235321 is a deficient number, since it is larger than the sum of its proper divisors (1).

825235321 is an equidigital number, since it uses as much as digits as its factorization.

825235321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14400, while the sum is 31.

The square root of 825235321 is about 28726.9093534268. The cubic root of 825235321 is about 937.9778929086.

Adding to 825235321 its reverse (123532528), we get a palindrome (948767849).

The spelling of 825235321 in words is "eight hundred twenty-five million, two hundred thirty-five thousand, three hundred twenty-one".