503440320125 has 16 divisors (see below), whose sum is σ = 634514263344. Its totient is φ = 398764600000.

The previous prime is 503440320101. The next prime is 503440320139. The reversal of 503440320125 is 521023044305.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 25519743001 + 477920577124 = 159749^2 + 691318^2 .

It is not a de Polignac number, because 503440320125 - 2⁸ = 503440319869 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19925606 + ... + 19950855.

It is an arithmetic number, because the mean of its divisors is an integer number (39657141459).

Almost surely, 2^503440320125 is an apocalyptic number.

It is an amenable number.

503440320125 is a deficient number, since it is larger than the sum of its proper divisors (131073943219).

503440320125 is a wasteful number, since it uses less digits than its factorization.

503440320125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39876577 (or 39876567 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 29.

The spelling of 503440320125 in words is "five hundred three billion, four hundred forty million, three hundred twenty thousand, one hundred twenty-five".