2556361250 has 20 divisors (see below), whose sum is σ = 4791645870. Its totient is φ = 1022544000.

The previous prime is 2556361217. The next prime is 2556361253. The reversal of 2556361250 is 521636552.

2556361250 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 5 ways, for example, as 104427961 + 2451933289 = 10219^2 + 49517^2 .

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2556361250.

It is not an unprimeable number, because it can be changed into a prime (2556361253) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 1021295 + ... + 1023794.

Almost surely, 2^2556361250 is an apocalyptic number.

2556361250 is a deficient number, since it is larger than the sum of its proper divisors (2235284620).

2556361250 is an equidigital number, since it uses as much as digits as its factorization.

2556361250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2045111 (or 2045096 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 35.

The square root of 2556361250 is about 50560.4712201142. The cubic root of 2556361250 is about 1367.3323067846.

The spelling of 2556361250 in words is "two billion, five hundred fifty-six million, three hundred sixty-one thousand, two hundred fifty".