505625644563431 has 16 divisors (see below), whose sum is σ = 582269731910400. Its totient is φ = 430096358926080.

The previous prime is 505625644563379. The next prime is 505625644563467. The reversal of 505625644563431 is 134365446526505.

It is not a de Polignac number, because 505625644563431 - 2¹⁰ = 505625644562407 is a prime.

It is a super-2 number, since 2×505625644563431² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505625644563131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 492762506 + ... + 493787543.

It is an arithmetic number, because the mean of its divisors is an integer number (36391858244400).

Almost surely, 2^{505625644563431} is an apocalyptic number.

505625644563431 is a deficient number, since it is larger than the sum of its proper divisors (76644087346969).

505625644563431 is a wasteful number, since it uses less digits than its factorization.

505625644563431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 986550614.

The product of its (nonzero) digits is 155520000, while the sum is 59.

The spelling of 505625644563431 in words is "five hundred five trillion, six hundred twenty-five billion, six hundred forty-four million, five hundred sixty-three thousand, four hundred thirty-one".