2686867225 has 27 divisors (see below), whose sum is σ = 3878287581. Its totient is φ = 1841179200.

The previous prime is 2686867213. The next prime is 2686867229. The reversal of 2686867225 is 5227686862.

The square root of 2686867225 is 51835.

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

It can be written as a sum of positive squares in 4 ways, for example, as 121242121 + 2565625104 = 11011^2 + 50652^2 .

It is not a de Polignac number, because 2686867225 - 2⁹ = 2686866713 is a prime.

It is a Smith number, since the sum of its digits (52) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (2686867229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 1813485 + ... + 1814965.

Almost surely, 2^2686867225 is an apocalyptic number.

2686867225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2686867225 is the 51835-th square number.

2686867225 is the 25918-th centered octagonal number.

It is an amenable number.

2686867225 is a deficient number, since it is larger than the sum of its proper divisors (1191420356).

2686867225 is an frugal number, since it uses more digits than its factorization.

2686867225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2986 (or 1493 counting only the distinct ones).

The product of its digits is 3870720, while the sum is 52.

The cubic root of 2686867225 is about 1390.2153152297.

The spelling of 2686867225 in words is "two billion, six hundred eighty-six million, eight hundred sixty-seven thousand, two hundred twenty-five".