2105856250275 has 24 divisors (see below), whose sum is σ = 3686487179184. Its totient is φ = 1057057254400.

The previous prime is 2105856250259. The next prime is 2105856250319. The reversal of 2105856250275 is 5720526585012.

It is a happy number.

It is not a de Polignac number, because 2105856250275 - 2⁴ = 2105856250259 is a prime.

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, 825824706 + ... + 825827255.

It is an arithmetic number, because the mean of its divisors is an integer number (153603632466).

Almost surely, 2^{2105856250275} is an apocalyptic number.

2105856250275 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2105856250275 is a deficient number, since it is larger than the sum of its proper divisors (1580630928909).

2105856250275 is a wasteful number, since it uses less digits than its factorization.

2105856250275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1651651991 (or 1651651986 counting only the distinct ones).

The product of its (nonzero) digits is 1680000, while the sum is 48.

The spelling of 2105856250275 in words is "two trillion, one hundred five billion, eight hundred fifty-six million, two hundred fifty thousand, two hundred seventy-five".