537604236225 has 81 divisors (see below), whose sum is σ = 1120278970083. Its totient is φ = 245726742240.

The previous prime is 537604236203. The next prime is 537604236227. The reversal of 537604236225 is 522632406735.

The square root of 537604236225 is 733215.

It is a perfect power (a square), and thus also a powerful number.

537604236225 is a `hidden beast` number, since 5 + 3 + 7 + 604 + 2 + 36 + 2 + 2 + 5 = 666.

It can be written as a sum of positive squares in only one way, i.e., 193537525041 + 344066711184 = 439929^2 + 586572^2 .

It is not a de Polignac number, because 537604236225 - 2²⁵ = 537570681793 is a prime.

It is a super-3 number, since 3×537604236225³ (a number of 36 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (537604236227) by changing a digit.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 76984084 + ... + 76991066.

Almost surely, 2^537604236225 is an apocalyptic number.

537604236225 is the 733215-th square number.

537604236225 is the 366608-th centered octagonal number.

It is an amenable number.

537604236225 is an abundant number, since it is smaller than the sum of its proper divisors (582674733858).

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

537604236225 is an frugal number, since it uses more digits than its factorization.

537604236225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13996 (or 6998 counting only the distinct ones).

The product of its (nonzero) digits is 1814400, while the sum is 45.

The spelling of 537604236225 in words is "five hundred thirty-seven billion, six hundred four million, two hundred thirty-six thousand, two hundred twenty-five".