2556266602 has 4 divisors (see below), whose sum is σ = 3834399906. Its totient is φ = 1278133300.

The previous prime is 2556266599. The next prime is 2556266651. The reversal of 2556266602 is 2066626552.

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., 1445444361 + 1110822241 = 38019^2 + 33329^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 639066649 + ... + 639066652.

Almost surely, 2^2556266602 is an apocalyptic number.

2556266602 is a deficient number, since it is larger than the sum of its proper divisors (1278133304).

2556266602 is a wasteful number, since it uses less digits than its factorization.

2556266602 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1278133303.

The product of its (nonzero) digits is 259200, while the sum is 40.

The square root of 2556266602 is about 50559.5352233384. The cubic root of 2556266602 is about 1367.3154316441.

The spelling of 2556266602 in words is "two billion, five hundred fifty-six million, two hundred sixty-six thousand, six hundred two".