2566435626 has 48 divisors (see below), whose sum is σ = 5774565888. Its totient is φ = 822895200.

The previous prime is 2566435579. The next prime is 2566435637. The reversal of 2566435626 is 6265346652.

2566435626 is a `hidden beast` number, since 25 + 6 + 64 + 3 + 562 + 6 = 666.

2566435626 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 79416 + ... + 106956.

It is an arithmetic number, because the mean of its divisors is an integer number (120303456).

Almost surely, 2^2566435626 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2566435626, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2887282944).

2566435626 is an abundant number, since it is smaller than the sum of its proper divisors (3208130262).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2566435626 is a wasteful number, since it uses less digits than its factorization.

2566435626 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27747 (or 27744 counting only the distinct ones).

The product of its digits is 1555200, while the sum is 45.

The square root of 2566435626 is about 50660.0002566127. Note that the first 3 decimals coincide. The cubic root of 2566435626 is about 1369.1261278447.

The spelling of 2566435626 in words is "two billion, five hundred sixty-six million, four hundred thirty-five thousand, six hundred twenty-six".