2555601888 has 48 divisors (see below), whose sum is σ = 7666807680. Its totient is φ = 730171776.

The previous prime is 2555601869. The next prime is 2555601899. The reversal of 2555601888 is 8881065552.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×2555601888² = 13062202019898329088, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1900818 + ... + 1902161.

It is an arithmetic number, because the mean of its divisors is an integer number (159725160).

Almost surely, 2^2555601888 is an apocalyptic number.

2555601888 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

2555601888 is an abundant number, since it is smaller than the sum of its proper divisors (5111205792).

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

2555601888 is a wasteful number, since it uses less digits than its factorization.

2555601888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3802999 (or 3802991 counting only the distinct ones).

The product of its (nonzero) digits is 768000, while the sum is 48.

The square root of 2555601888 is about 50552.9612189039. The cubic root of 2555601888 is about 1367.1969056005.

The spelling of 2555601888 in words is "two billion, five hundred fifty-five million, six hundred one thousand, eight hundred eighty-eight".