2143825775 has 24 divisors (see below), whose sum is σ = 3271811424. Its totient is φ = 1356969600.

The previous prime is 2143825757. The next prime is 2143825787. The reversal of 2143825775 is 5775283412.

It is not a de Polignac number, because 2143825775 - 2¹⁰ = 2143824751 is a prime.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a congruent number.

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, 468896 + ... + 473445.

It is an arithmetic number, because the mean of its divisors is an integer number (136325476).

Almost surely, 2^2143825775 is an apocalyptic number.

2143825775 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2143825775 is a deficient number, since it is larger than the sum of its proper divisors (1127985649).

2143825775 is a wasteful number, since it uses less digits than its factorization.

2143825775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 942371 (or 942366 counting only the distinct ones).

The product of its digits is 470400, while the sum is 44.

The square root of 2143825775 is about 46301.4662294835. The cubic root of 2143825775 is about 1289.4262165893.

The spelling of 2143825775 in words is "two billion, one hundred forty-three million, eight hundred twenty-five thousand, seven hundred seventy-five".