503406631625 has 32 divisors (see below), whose sum is σ = 667498216320. Its totient is φ = 377963352000.

The previous prime is 503406631601. The next prime is 503406631627. The reversal of 503406631625 is 526136604305.

It is a de Polignac number, because none of the positive numbers 2^k-503406631625 is a prime.

It is not an unprimeable number, because it can be changed into a prime (503406631627) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 736346 + ... + 1244595.

It is an arithmetic number, because the mean of its divisors is an integer number (20859319260).

Almost surely, 2^503406631625 is an apocalyptic number.

It is an amenable number.

503406631625 is a deficient number, since it is larger than the sum of its proper divisors (164091584695).

503406631625 is a wasteful number, since it uses less digits than its factorization.

503406631625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1981082 (or 1981072 counting only the distinct ones).

The product of its (nonzero) digits is 388800, while the sum is 41.

The spelling of 503406631625 in words is "five hundred three billion, four hundred six million, six hundred thirty-one thousand, six hundred twenty-five".