2555222401 has 4 divisors (see below), whose sum is σ = 2555924400. Its totient is φ = 2554520404.

The previous prime is 2555222389. The next prime is 2555222407. The reversal of 2555222401 is 1042225552.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2555222401 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2555222401.

It is not an unprimeable number, because it can be changed into a prime (2555222407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 345511 + ... + 352828.

It is an arithmetic number, because the mean of its divisors is an integer number (638981100).

Almost surely, 2^2555222401 is an apocalyptic number.

It is an amenable number.

2555222401 is a deficient number, since it is larger than the sum of its proper divisors (701999).

2555222401 is an equidigital number, since it uses as much as digits as its factorization.

2555222401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 701998.

The product of its (nonzero) digits is 8000, while the sum is 28.

The square root of 2555222401 is about 50549.2077188159. The cubic root of 2555222401 is about 1367.1292295490.

Adding to 2555222401 its reverse (1042225552), we get a palindrome (3597447953).

The spelling of 2555222401 in words is "two billion, five hundred fifty-five million, two hundred twenty-two thousand, four hundred one".