2164625266 has 32 divisors (see below), whose sum is σ = 3591734400. Its totient is φ = 973184256.

The previous prime is 2164625263. The next prime is 2164625269. The reversal of 2164625266 is 6625264612.

It is an interprime number because it is at equal distance from previous prime (2164625263) and next prime (2164625269).

It is not an unprimeable number, because it can be changed into a prime (2164625263) 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 15 ways as a sum of consecutive naturals, for example, 1210425 + ... + 1212211.

It is an arithmetic number, because the mean of its divisors is an integer number (112241700).

Almost surely, 2^2164625266 is an apocalyptic number.

2164625266 is a deficient number, since it is larger than the sum of its proper divisors (1427109134).

2164625266 is a wasteful number, since it uses less digits than its factorization.

2164625266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3378.

The product of its digits is 207360, while the sum is 40.

The square root of 2164625266 is about 46525.5334843138. The cubic root of 2164625266 is about 1293.5828259928.

Adding to 2164625266 its reverse (6625264612), we get a palindrome (8789889878).

The spelling of 2164625266 in words is "two billion, one hundred sixty-four million, six hundred twenty-five thousand, two hundred sixty-six".