537064725409 has 9 divisors (see below), whose sum is σ = 544576804083. Its totient is φ = 529654909392.

The previous prime is 537064725403. The next prime is 537064725433. The reversal of 537064725409 is 904527460735.

It is a happy number.

The square root of 537064725409 is 732847.

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

It can be written as a sum of positive squares in only one way, i.e., 304864101025 + 232200624384 = 552145^2 + 481872^2 .

It is not a de Polignac number, because 537064725409 - 2¹¹ = 537064723361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (537064725403) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 53492812 + ... + 53502850.

It is an arithmetic number, because the mean of its divisors is an integer number (60508533787).

Almost surely, 2^537064725409 is an apocalyptic number.

537064725409 is the 732847-th square number.

537064725409 is the 366424-th centered octagonal number.

It is an amenable number.

537064725409 is a deficient number, since it is larger than the sum of its proper divisors (7512078674).

537064725409 is an frugal number, since it uses more digits than its factorization.

537064725409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20224 (or 10112 counting only the distinct ones).

The product of its (nonzero) digits is 6350400, while the sum is 52.

The spelling of 537064725409 in words is "five hundred thirty-seven billion, sixty-four million, seven hundred twenty-five thousand, four hundred nine".