503125665 has 32 divisors (see below), whose sum is σ = 931101696. Its totient is φ = 227225280.

The previous prime is 503125657. The next prime is 503125673. The reversal of 503125665 is 566521305.

It is an interprime number because it is at equal distance from previous prime (503125657) and next prime (503125673).

It is not a de Polignac number, because 503125665 - 2³ = 503125657 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20151 + ... + 37580.

It is an arithmetic number, because the mean of its divisors is an integer number (29096928).

Almost surely, 2^503125665 is an apocalyptic number.

It is an amenable number.

503125665 is a deficient number, since it is larger than the sum of its proper divisors (427976031).

503125665 is a wasteful number, since it uses less digits than its factorization.

503125665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57829.

The product of its (nonzero) digits is 27000, while the sum is 33.

The square root of 503125665 is about 22430.4628797535. The cubic root of 503125665 is about 795.3509861928.

The spelling of 503125665 in words is "five hundred three million, one hundred twenty-five thousand, six hundred sixty-five".