53725038509 has 4 divisors (see below), whose sum is σ = 53730482304. Its totient is φ = 53719594716.

The previous prime is 53725038491. The next prime is 53725038539. The reversal of 53725038509 is 90583052735.

It is a happy number.

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 a cyclic number.

It is not a de Polignac number, because 53725038509 - 2²⁴ = 53708261293 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53725038539) 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, 2707067 + ... + 2726840.

It is an arithmetic number, because the mean of its divisors is an integer number (13432620576).

Almost surely, 2^53725038509 is an apocalyptic number.

It is an amenable number.

53725038509 is a deficient number, since it is larger than the sum of its proper divisors (5443795).

53725038509 is an equidigital number, since it uses as much as digits as its factorization.

53725038509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5443794.

The product of its (nonzero) digits is 1134000, while the sum is 47.

The spelling of 53725038509 in words is "fifty-three billion, seven hundred twenty-five million, thirty-eight thousand, five hundred nine".