523513432013525 has 12 divisors (see below), whose sum is σ = 649177803882852. Its totient is φ = 418797101619840.

The previous prime is 523513432013489. The next prime is 523513432013603. The reversal of 523513432013525 is 525310234315325.

It can be written as a sum of positive squares in 6 ways, for example, as 222840675766801 + 300672756246724 = 14927849^2 + 17339918^2 .

It is not a de Polignac number, because 523513432013525 - 2⁸ = 523513432013269 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 340317002 + ... + 341851851.

It is an arithmetic number, because the mean of its divisors is an integer number (54098150323571).

Almost surely, 2^{523513432013525} is an apocalyptic number.

It is an amenable number.

523513432013525 is a deficient number, since it is larger than the sum of its proper divisors (125664371869327).

523513432013525 is a wasteful number, since it uses less digits than its factorization.

523513432013525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 682199560 (or 682199555 counting only the distinct ones).

The product of its (nonzero) digits is 1620000, while the sum is 44.

The spelling of 523513432013525 in words is "five hundred twenty-three trillion, five hundred thirteen billion, four hundred thirty-two million, thirteen thousand, five hundred twenty-five".