2555002778 has 32 divisors (see below), whose sum is σ = 3931405632. Its totient is φ = 1245088000.

The previous prime is 2555002763. The next prime is 2555002799. The reversal of 2555002778 is 8772005552.

2555002778 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6371378 + ... + 6371778.

It is an arithmetic number, because the mean of its divisors is an integer number (122856426).

Almost surely, 2^2555002778 is an apocalyptic number.

2555002778 is a deficient number, since it is larger than the sum of its proper divisors (1376402854).

2555002778 is a wasteful number, since it uses less digits than its factorization.

2555002778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 910.

The product of its (nonzero) digits is 196000, while the sum is 41.

The square root of 2555002778 is about 50547.0353037644. The cubic root of 2555002778 is about 1367.0900598828.

The spelling of 2555002778 in words is "two billion, five hundred fifty-five million, two thousand, seven hundred seventy-eight".