2500211165 has 16 divisors (see below), whose sum is σ = 3178096560. Its totient is φ = 1881707520.

The previous prime is 2500211137. The next prime is 2500211171. The reversal of 2500211165 is 5611120052.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 2910436 + 2497300729 = 1706^2 + 49973^2 .

It is a de Polignac number, because none of the positive numbers 2^k-2500211165 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2500211165.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 259535 + ... + 268995.

It is an arithmetic number, because the mean of its divisors is an integer number (198631035).

Almost surely, 2^2500211165 is an apocalyptic number.

It is an amenable number.

2500211165 is a deficient number, since it is larger than the sum of its proper divisors (677885395).

2500211165 is a wasteful number, since it uses less digits than its factorization.

2500211165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12592.

The product of its (nonzero) digits is 600, while the sum is 23.

The square root of 2500211165 is about 50002.1116054112. Note that the first 3 decimals coincide. The cubic root of 2500211165 is about 1357.2470198880.

The spelling of 2500211165 in words is "two billion, five hundred million, two hundred eleven thousand, one hundred sixty-five".