2778253005 has 32 divisors (see below), whose sum is σ = 4962101760. Its totient is φ = 1315702080.

The previous prime is 2778253001. The next prime is 2778253013. The reversal of 2778253005 is 5003528772.

2778253005 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2778253005 - 2² = 2778253001 is a prime.

It is a super-3 number, since 3×2778253005³ (a number of 29 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2778253001) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 188695 + ... + 202884.

It is an arithmetic number, because the mean of its divisors is an integer number (155065680).

Almost surely, 2^2778253005 is an apocalyptic number.

It is an amenable number.

2778253005 is a deficient number, since it is larger than the sum of its proper divisors (2183848755).

2778253005 is a wasteful number, since it uses less digits than its factorization.

2778253005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 391641.

The product of its (nonzero) digits is 117600, while the sum is 39.

The square root of 2778253005 is about 52709.1358779481. The cubic root of 2778253005 is about 1405.8012686977.

The spelling of 2778253005 in words is "two billion, seven hundred seventy-eight million, two hundred fifty-three thousand, five".