2502056666 has 4 divisors (see below), whose sum is σ = 3753085002. Its totient is φ = 1251028332.

The previous prime is 2502056659. The next prime is 2502056671. The reversal of 2502056666 is 6666502052.

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., 2187526441 + 314530225 = 46771^2 + 17735^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 625514165 + ... + 625514168.

Almost surely, 2^2502056666 is an apocalyptic number.

2502056666 is a deficient number, since it is larger than the sum of its proper divisors (1251028336).

2502056666 is a wasteful number, since it uses less digits than its factorization.

2502056666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1251028335.

The product of its (nonzero) digits is 129600, while the sum is 38.

The square root of 2502056666 is about 50020.5624318640. The cubic root of 2502056666 is about 1357.5808829798.

The spelling of 2502056666 in words is "two billion, five hundred two million, fifty-six thousand, six hundred sixty-six".