825201401 has 2 divisors, whose sum is σ = 825201402. Its totient is φ = 825201400.

The previous prime is 825201397. The next prime is 825201427. The reversal of 825201401 is 104102528.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 825068176 + 133225 = 28724^2 + 365^2 .

It is a cyclic number.

It is not a de Polignac number, because 825201401 - 2² = 825201397 is a prime.

It is not a weakly prime, because it can be changed into another prime (825201001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 412600700 + 412600701.

It is an arithmetic number, because the mean of its divisors is an integer number (412600701).

Almost surely, 2^825201401 is an apocalyptic number.

It is an amenable number.

825201401 is a deficient number, since it is larger than the sum of its proper divisors (1).

825201401 is an equidigital number, since it uses as much as digits as its factorization.

825201401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 640, while the sum is 23.

The square root of 825201401 is about 28726.3189601452. The cubic root of 825201401 is about 937.9650413638.

Adding to 825201401 its reverse (104102528), we get a palindrome (929303929).

The spelling of 825201401 in words is "eight hundred twenty-five million, two hundred one thousand, four hundred one".