2564357226 has 32 divisors (see below), whose sum is σ = 5173616448. Its totient is φ = 847317120.

The previous prime is 2564357221. The next prime is 2564357227. The reversal of 2564357226 is 6227534652.

It is a happy number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2564357221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1285686 + ... + 1287678.

It is an arithmetic number, because the mean of its divisors is an integer number (161675514).

Almost surely, 2^2564357226 is an apocalyptic number.

2564357226 is an abundant number, since it is smaller than the sum of its proper divisors (2609259222).

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

2564357226 is a wasteful number, since it uses less digits than its factorization.

2564357226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3766.

The product of its digits is 604800, while the sum is 42.

The square root of 2564357226 is about 50639.4828765065. The cubic root of 2564357226 is about 1368.7564373918.

The spelling of 2564357226 in words is "two billion, five hundred sixty-four million, three hundred fifty-seven thousand, two hundred twenty-six".