505604131525 has 24 divisors (see below), whose sum is σ = 648693335880. Its totient is φ = 390460170240.

The previous prime is 505604131493. The next prime is 505604131541. The reversal of 505604131525 is 525131406505.

It is a happy number.

It can be written as a sum of positive squares in 12 ways, for example, as 11471052609 + 494133078916 = 107103^2 + 702946^2 .

It is not a de Polignac number, because 505604131525 - 2⁵ = 505604131493 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3845269 + ... + 3974581.

It is an arithmetic number, because the mean of its divisors is an integer number (27028888995).

Almost surely, 2^505604131525 is an apocalyptic number.

It is an amenable number.

505604131525 is a deficient number, since it is larger than the sum of its proper divisors (143089204355).

505604131525 is a wasteful number, since it uses less digits than its factorization.

505604131525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134745 (or 134740 counting only the distinct ones).

The product of its (nonzero) digits is 90000, while the sum is 37.

The spelling of 505604131525 in words is "five hundred five billion, six hundred four million, one hundred thirty-one thousand, five hundred twenty-five".