2778594625 has 16 divisors (see below), whose sum is σ = 3487086720. Its totient is φ = 2210439600.

The previous prime is 2778594619. The next prime is 2778594647. The reversal of 2778594625 is 5264958772.

It is not a de Polignac number, because 2778594625 - 2⁵ = 2778594593 is a prime.

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, 39717 + ... + 84466.

It is an arithmetic number, because the mean of its divisors is an integer number (217942920).

Almost surely, 2^2778594625 is an apocalyptic number.

2778594625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2778594625 is a deficient number, since it is larger than the sum of its proper divisors (708492095).

2778594625 is a wasteful number, since it uses less digits than its factorization.

2778594625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124377 (or 124367 counting only the distinct ones).

The product of its digits is 8467200, while the sum is 55.

The square root of 2778594625 is about 52712.3763930256. The cubic root of 2778594625 is about 1405.8588864579.

The spelling of 2778594625 in words is "two billion, seven hundred seventy-eight million, five hundred ninety-four thousand, six hundred twenty-five".