537818328225 has 72 divisors (see below), whose sum is σ = 1005381574080. Its totient is φ = 274308819840.

The previous prime is 537818328161. The next prime is 537818328263. The reversal of 537818328225 is 522823818735.

537818328225 is a `hidden beast` number, since 5 + 378 + 18 + 32 + 8 + 225 = 666.

537818328225 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 537818328225 - 2⁶ = 537818328161 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 38593359 + ... + 38607291.

Almost surely, 2^537818328225 is an apocalyptic number.

It is an amenable number.

537818328225 is a deficient number, since it is larger than the sum of its proper divisors (467563245855).

537818328225 is a wasteful number, since it uses less digits than its factorization.

537818328225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21431 (or 21423 counting only the distinct ones).

The product of its digits is 6451200, while the sum is 54.

The spelling of 537818328225 in words is "five hundred thirty-seven billion, eight hundred eighteen million, three hundred twenty-eight thousand, two hundred twenty-five".