2581255338 has 8 divisors (see below), whose sum is σ = 5162510688. Its totient is φ = 860418444.

The previous prime is 2581255319. The next prime is 2581255351. The reversal of 2581255338 is 8335521852.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

2581255338 is an admirable number.

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 2581255338.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 215104606 + ... + 215104617.

It is an arithmetic number, because the mean of its divisors is an integer number (645313836).

Almost surely, 2^2581255338 is an apocalyptic number.

2581255338 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2581255338 is a wasteful number, since it uses less digits than its factorization.

2581255338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 430209228.

The product of its digits is 288000, while the sum is 42.

The square root of 2581255338 is about 50806.0561153884. The cubic root of 2581255338 is about 1371.7563808675.

The spelling of 2581255338 in words is "two billion, five hundred eighty-one million, two hundred fifty-five thousand, three hundred thirty-eight".