1211535325 has 48 divisors (see below), whose sum is σ = 2017120896. Its totient is φ = 697132800.

The previous prime is 1211535239. The next prime is 1211535329. The reversal of 1211535325 is 5235351121.

It is not a de Polignac number, because 1211535325 - 2¹³ = 1211527133 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1211535293 and 1211535302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211535329) 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 47 ways as a sum of consecutive naturals, for example, 819 + ... + 49231.

It is an arithmetic number, because the mean of its divisors is an integer number (42023352).

Almost surely, 2^1211535325 is an apocalyptic number.

It is an amenable number.

1211535325 is a deficient number, since it is larger than the sum of its proper divisors (805585571).

1211535325 is a wasteful number, since it uses less digits than its factorization.

1211535325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48454 (or 48449 counting only the distinct ones).

The product of its digits is 4500, while the sum is 28.

The square root of 1211535325 is about 34807.1160109539. The cubic root of 1211535325 is about 1066.0527475844.

Adding to 1211535325 its reverse (5235351121), we get a palindrome (6446886446).

The spelling of 1211535325 in words is "one billion, two hundred eleven million, five hundred thirty-five thousand, three hundred twenty-five".