1243133325 has 288 divisors, whose sum is σ = 2911813632. Its totient is φ = 513216000.

The previous prime is 1243133267. The next prime is 1243133327. The reversal of 1243133325 is 5233313421.

1243133325 is a `hidden beast` number, since 1 + 24 + 313 + 3 + 325 = 666.

It is not a de Polignac number, because 1243133325 - 2¹⁹ = 1242609037 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1243133327) by changing a digit.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 30320305 + ... + 30320345.

It is an arithmetic number, because the mean of its divisors is an integer number (10110464).

Almost surely, 2^1243133325 is an apocalyptic number.

1243133325 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1243133325 is an abundant number, since it is smaller than the sum of its proper divisors (1668680307).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1243133325 is a wasteful number, since it uses less digits than its factorization.

1243133325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127 (or 110 counting only the distinct ones).

The product of its digits is 6480, while the sum is 27.

The square root of 1243133325 is about 35258.0958788191. The cubic root of 1243133325 is about 1075.2412150252.

Adding to 1243133325 its reverse (5233313421), we get a palindrome (6476446746).

The spelling of 1243133325 in words is "one billion, two hundred forty-three million, one hundred thirty-three thousand, three hundred twenty-five".