201321425 has 6 divisors (see below), whose sum is σ = 249638598. Its totient is φ = 161057120.

The previous prime is 201321391. The next prime is 201321427. The reversal of 201321425 is 524123102.

It can be written as a sum of positive squares in 3 ways, for example, as 17230801 + 184090624 = 4151^2 + 13568^2 .

It is not a de Polignac number, because 201321425 - 2¹² = 201317329 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201321397 and 201321406.

It is not an unprimeable number, because it can be changed into a prime (201321427) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4026404 + ... + 4026453.

It is an arithmetic number, because the mean of its divisors is an integer number (41606433).

Almost surely, 2^201321425 is an apocalyptic number.

201321425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

201321425 is a deficient number, since it is larger than the sum of its proper divisors (48317173).

201321425 is an equidigital number, since it uses as much as digits as its factorization.

201321425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8052867 (or 8052862 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 201321425 is about 14188.7781362597. The cubic root of 201321425 is about 586.0886781585.

Adding to 201321425 its reverse (524123102), we get a palindrome (725444527).

The spelling of 201321425 in words is "two hundred one million, three hundred twenty-one thousand, four hundred twenty-five".