2780000505250 has 64 divisors (see below), whose sum is σ = 5218994008800. Its totient is φ = 1108833024000.

The previous prime is 2780000505187. The next prime is 2780000505251. The reversal of 2780000505250 is 525050000872.

It can be written as a sum of positive squares in 16 ways, for example, as 369089055729 + 2410911449521 = 607527^2 + 1552711^2 .

It is not an unprimeable number, because it can be changed into a prime (2780000505251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 384558636 + ... + 384565864.

Almost surely, 2^{2780000505250} is an apocalyptic number.

2780000505250 is a deficient number, since it is larger than the sum of its proper divisors (2438993503550).

2780000505250 is a wasteful number, since it uses less digits than its factorization.

2780000505250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11416 (or 11406 counting only the distinct ones).

The product of its (nonzero) digits is 28000, while the sum is 34.

The spelling of 2780000505250 in words is "two trillion, seven hundred eighty billion, five hundred five thousand, two hundred fifty".