2506001266 has 4 divisors (see below), whose sum is σ = 3759001902. Its totient is φ = 1253000632.

The previous prime is 2506001261. The next prime is 2506001269. The reversal of 2506001266 is 6621006052.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 2502500625 + 3500641 = 50025^2 + 1871^2 .

It is not an unprimeable number, because it can be changed into a prime (2506001261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 626500315 + ... + 626500318.

Almost surely, 2^2506001266 is an apocalyptic number.

2506001266 is a deficient number, since it is larger than the sum of its proper divisors (1253000636).

2506001266 is a wasteful number, since it uses less digits than its factorization.

2506001266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1253000635.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 2506001266 is about 50059.9766879690. The cubic root of 2506001266 is about 1358.2939366177.

The spelling of 2506001266 in words is "two billion, five hundred six million, one thousand, two hundred sixty-six".