2564255650 has 48 divisors (see below), whose sum is σ = 5208014880. Its totient is φ = 931577600.

The previous prime is 2564255641. The next prime is 2564255677. The reversal of 2564255650 is 565524652.

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, 981546 + ... + 984154.

It is an arithmetic number, because the mean of its divisors is an integer number (108500310).

Almost surely, 2^2564255650 is an apocalyptic number.

2564255650 is an abundant number, since it is smaller than the sum of its proper divisors (2643759230).

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

2564255650 is a wasteful number, since it uses less digits than its factorization.

2564255650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4419 (or 4414 counting only the distinct ones).

The product of its (nonzero) digits is 360000, while the sum is 40.

The square root of 2564255650 is about 50638.4799337421. The cubic root of 2564255650 is about 1368.7383646836.

The spelling of 2564255650 in words is "two billion, five hundred sixty-four million, two hundred fifty-five thousand, six hundred fifty".