505125235404145 has 16 divisors (see below), whose sum is σ = 606262355172432. Its totient is φ = 404025477672960.

The previous prime is 505125235404143. The next prime is 505125235404199. The reversal of 505125235404145 is 541404532521505.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 25222081021281 + 479903154382864 = 5022159^2 + 21906692^2 .

It is not a de Polignac number, because 505125235404145 - 2¹ = 505125235404143 is a prime.

It is a super-2 number, since 2×505125235404145² (a number of 30 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 = 505125235404095 and 505125235404104.

It is not an unprimeable number, because it can be changed into a prime (505125235404143) 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, 963619939 + ... + 964143991.

It is an arithmetic number, because the mean of its divisors is an integer number (37891397198277).

Almost surely, 2^{505125235404145} is an apocalyptic number.

It is an amenable number.

505125235404145 is a deficient number, since it is larger than the sum of its proper divisors (101137119768287).

505125235404145 is a wasteful number, since it uses less digits than its factorization.

505125235404145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 559332.

The product of its (nonzero) digits is 2400000, while the sum is 46.

The spelling of 505125235404145 in words is "five hundred five trillion, one hundred twenty-five billion, two hundred thirty-five million, four hundred four thousand, one hundred forty-five".