255415437515085 has 32 divisors (see below), whose sum is σ = 426435006412800. Its totient is φ = 130298194433088.

The previous prime is 255415437515083. The next prime is 255415437515089. The reversal of 255415437515085 is 580515734514552.

It is a happy number.

It is not a de Polignac number, because 255415437515085 - 2¹ = 255415437515083 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255415437515083) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 66159366 + ... + 69913464.

It is an arithmetic number, because the mean of its divisors is an integer number (13326093950400).

Almost surely, 2^{255415437515085} is an apocalyptic number.

It is an amenable number.

255415437515085 is a deficient number, since it is larger than the sum of its proper divisors (171019568897715).

255415437515085 is a wasteful number, since it uses less digits than its factorization.

255415437515085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3951337.

The product of its (nonzero) digits is 84000000, while the sum is 60.

The spelling of 255415437515085 in words is "two hundred fifty-five trillion, four hundred fifteen billion, four hundred thirty-seven million, five hundred fifteen thousand, eighty-five".