1325225221 has 8 divisors (see below), whose sum is σ = 1335375000. Its totient is φ = 1315092480.

The previous prime is 1325225179. The next prime is 1325225233. The reversal of 1325225221 is 1225225231.

It can be written as a sum of positive squares in 4 ways, for example, as 46376100 + 1278849121 = 6810^2 + 35761^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1325225221 - 2²¹ = 1323128069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1325225261) 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 in 7 ways as a sum of consecutive naturals, for example, 182541 + ... + 189661.

It is an arithmetic number, because the mean of its divisors is an integer number (166921875).

Almost surely, 2^1325225221 is an apocalyptic number.

It is an amenable number.

1325225221 is a deficient number, since it is larger than the sum of its proper divisors (10149779).

1325225221 is a wasteful number, since it uses less digits than its factorization.

1325225221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8519.

The product of its digits is 2400, while the sum is 25.

The square root of 1325225221 is about 36403.6429633079. The cubic root of 1325225221 is about 1098.4068455035.

The spelling of 1325225221 in words is "one billion, three hundred twenty-five million, two hundred twenty-five thousand, two hundred twenty-one".