1325003121 has 12 divisors (see below), whose sum is σ = 2061116148. Its totient is φ = 815386464.

The previous prime is 1325003117. The next prime is 1325003131. The reversal of 1325003121 is 1213005231.

1325003121 is a `hidden beast` number, since 132 + 500 + 31 + 2 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 74390625 + 1250612496 = 8625^2 + 35364^2 .

It is not a de Polignac number, because 1325003121 - 2² = 1325003117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1325003094 and 1325003103.

It is not an unprimeable number, because it can be changed into a prime (1325003101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5662290 + ... + 5662523.

It is an arithmetic number, because the mean of its divisors is an integer number (171759679).

Almost surely, 2^1325003121 is an apocalyptic number.

It is an amenable number.

1325003121 is a deficient number, since it is larger than the sum of its proper divisors (736113027).

1325003121 is a wasteful number, since it uses less digits than its factorization.

1325003121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11324832 (or 11324829 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 1325003121 is about 36400.5923166094. The cubic root of 1325003121 is about 1098.3454798864.

Adding to 1325003121 its reverse (1213005231), we get a palindrome (2538008352).

The spelling of 1325003121 in words is "one billion, three hundred twenty-five million, three thousand, one hundred twenty-one".