538725009 has 4 divisors (see below), whose sum is σ = 718300016. Its totient is φ = 359150004.

The previous prime is 538725007. The next prime is 538725043. The reversal of 538725009 is 900527835.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 538725009 - 2¹ = 538725007 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (538725001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 89787499 + ... + 89787504.

It is an arithmetic number, because the mean of its divisors is an integer number (179575004).

Almost surely, 2^538725009 is an apocalyptic number.

It is an amenable number.

538725009 is a deficient number, since it is larger than the sum of its proper divisors (179575007).

538725009 is a wasteful number, since it uses less digits than its factorization.

538725009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179575006.

The product of its (nonzero) digits is 75600, while the sum is 39.

The square root of 538725009 is about 23210.4504264782. The cubic root of 538725009 is about 813.6838802722.

The spelling of 538725009 in words is "five hundred thirty-eight million, seven hundred twenty-five thousand, nine".