2778725627 has 4 divisors (see below), whose sum is σ = 2778859440. Its totient is φ = 2778591816.

The previous prime is 2778725591. The next prime is 2778725647. The reversal of 2778725627 is 7265278772.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2778725627 - 2¹⁰ = 2778724603 is a prime.

It is a super-2 number, since 2×2778725627² = 15442632220293086258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2778725647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28352 + ... + 79757.

It is an arithmetic number, because the mean of its divisors is an integer number (694714860).

Almost surely, 2^2778725627 is an apocalyptic number.

2778725627 is a deficient number, since it is larger than the sum of its proper divisors (133813).

2778725627 is a wasteful number, since it uses less digits than its factorization.

2778725627 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133812.

The product of its digits is 4609920, while the sum is 53.

The square root of 2778725627 is about 52713.6189897829. The cubic root of 2778725627 is about 1405.8809800527.

The spelling of 2778725627 in words is "two billion, seven hundred seventy-eight million, seven hundred twenty-five thousand, six hundred twenty-seven".