2778025356 has 48 divisors (see below), whose sum is σ = 7377965280. Its totient is φ = 903421440.

The previous prime is 2778025337. The next prime is 2778025357. The reversal of 2778025356 is 6535208772.

2778025356 is a `hidden beast` number, since 277 + 8 + 0 + 25 + 356 = 666.

It is not an unprimeable number, because it can be changed into a prime (2778025357) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 309261 + ... + 318116.

It is an arithmetic number, because the mean of its divisors is an integer number (153707610).

Almost surely, 2^2778025356 is an apocalyptic number.

It is an amenable number.

2778025356 is an abundant number, since it is smaller than the sum of its proper divisors (4599939924).

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

2778025356 is a wasteful number, since it uses less digits than its factorization.

2778025356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 627431 (or 627423 counting only the distinct ones).

The product of its (nonzero) digits is 705600, while the sum is 45.

The square root of 2778025356 is about 52706.9763503846. The cubic root of 2778025356 is about 1405.7628707075.

The spelling of 2778025356 in words is "two billion, seven hundred seventy-eight million, twenty-five thousand, three hundred fifty-six".