2502502778 has 16 divisors (see below), whose sum is σ = 3820136256. Its totient is φ = 1229249280.

The previous prime is 2502502757. The next prime is 2502502781. The reversal of 2502502778 is 8772052052.

It is a Curzon 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, 9050 + ... + 71322.

It is an arithmetic number, because the mean of its divisors is an integer number (238758516).

Almost surely, 2^2502502778 is an apocalyptic number.

2502502778 is a deficient number, since it is larger than the sum of its proper divisors (1317633478).

2502502778 is a wasteful number, since it uses less digits than its factorization.

2502502778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62629.

The product of its (nonzero) digits is 78400, while the sum is 38.

The square root of 2502502778 is about 50025.0215192358. The cubic root of 2502502778 is about 1357.6615628914.

The spelling of 2502502778 in words is "two billion, five hundred two million, five hundred two thousand, seven hundred seventy-eight".