503425043531 has 4 divisors (see below), whose sum is σ = 512923629312. Its totient is φ = 493926457752.

The previous prime is 503425043479. The next prime is 503425043549. The reversal of 503425043531 is 135340524305.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-503425043531 is a prime.

It is a super-2 number, since 2×503425043531² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 503425043491 and 503425043500.

It is not an unprimeable number, because it can be changed into a prime (503425048531) 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, 4749292811 + ... + 4749292916.

It is an arithmetic number, because the mean of its divisors is an integer number (128230907328).

Almost surely, 2^503425043531 is an apocalyptic number.

503425043531 is a deficient number, since it is larger than the sum of its proper divisors (9498585781).

503425043531 is an equidigital number, since it uses as much as digits as its factorization.

503425043531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9498585780.

The product of its (nonzero) digits is 108000, while the sum is 35.

Adding to 503425043531 its reverse (135340524305), we get a palindrome (638765567836).

The spelling of 503425043531 in words is "five hundred three billion, four hundred twenty-five million, forty-three thousand, five hundred thirty-one".