1233521125 has 8 divisors (see below), whose sum is σ = 1539434520. Its totient is φ = 986816800.

The previous prime is 1233521123. The next prime is 1233521129. The reversal of 1233521125 is 5211253321.

It can be written as a sum of positive squares in 4 ways, for example, as 201441249 + 1032079876 = 14193^2 + 32126^2 .

It is not a de Polignac number, because 1233521125 - 2¹ = 1233521123 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a self number, because there is not a number n which added to its sum of digits gives 1233521125.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1233521123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4933960 + ... + 4934209.

It is an arithmetic number, because the mean of its divisors is an integer number (192429315).

Almost surely, 2^1233521125 is an apocalyptic number.

It is an amenable number.

1233521125 is a deficient number, since it is larger than the sum of its proper divisors (305913395).

1233521125 is an frugal number, since it uses more digits than its factorization.

1233521125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9868184 (or 9868174 counting only the distinct ones).

The product of its digits is 1800, while the sum is 25.

The square root of 1233521125 is about 35121.5194005043. The cubic root of 1233521125 is about 1072.4627017600.

Adding to 1233521125 its reverse (5211253321), we get a palindrome (6444774446).

The spelling of 1233521125 in words is "one billion, two hundred thirty-three million, five hundred twenty-one thousand, one hundred twenty-five".