2811943303225 has 27 divisors (see below), whose sum is σ = 4056169408911. Its totient is φ = 1928149448400.

The previous prime is 2811943303171. The next prime is 2811943303241. The reversal of 2811943303225 is 5223033491182.

The square root of 2811943303225 is 1676885.

It is a perfect power (a square), and thus also a powerful number.

2811943303225 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 1012299589161 + 1799643714064 = 1006131^2 + 1341508^2 .

It is not a de Polignac number, because 2811943303225 - 2¹³ = 2811943295033 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 58667020 + ... + 58714930.

Almost surely, 2^{2811943303225} is an apocalyptic number.

2811943303225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2811943303225 is the 1676885-th square number.

2811943303225 is the 838443-rd centered octagonal number.

It is an amenable number.

2811943303225 is a deficient number, since it is larger than the sum of its proper divisors (1244226105686).

2811943303225 is an frugal number, since it uses more digits than its factorization.

2811943303225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95846 (or 47923 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 43.

The spelling of 2811943303225 in words is "two trillion, eight hundred eleven billion, nine hundred forty-three million, three hundred three thousand, two hundred twenty-five".