2505811085165 has 8 divisors (see below), whose sum is σ = 3013412220000. Its totient is φ = 2000356256272.

The previous prime is 2505811085149. The next prime is 2505811085179. The reversal of 2505811085165 is 5615801185052.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2505811085165 - 2⁴ = 2505811085149 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 536573915 + ... + 536578584.

It is an arithmetic number, because the mean of its divisors is an integer number (376676527500).

Almost surely, 2^{2505811085165} is an apocalyptic number.

It is an amenable number.

2505811085165 is a deficient number, since it is larger than the sum of its proper divisors (507601134835).

2505811085165 is a wasteful number, since it uses less digits than its factorization.

2505811085165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1073152971.

The product of its (nonzero) digits is 480000, while the sum is 47.

The spelling of 2505811085165 in words is "two trillion, five hundred five billion, eight hundred eleven million, eighty-five thousand, one hundred sixty-five".