2777125 has 16 divisors (see below), whose sum is σ = 3734640. Its totient is φ = 2049600.

The previous prime is 2777113. The next prime is 2777141. The reversal of 2777125 is 5217772.

It can be written as a sum of positive squares in 8 ways, for example, as 1887876 + 889249 = 1374^2 + 943^2 .

It is not a de Polignac number, because 2777125 - 2¹³ = 2768933 is a prime.

It is a d-powerful number, because it can be written as 2⁵ + 7² + 7³ + 7⁷ + 1 + 2⁵ + 5⁹ .

2777125 is a lucky number.

It is a congruent number.

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, 771 + ... + 2479.

It is an arithmetic number, because the mean of its divisors is an integer number (233415).

2^2777125 is an apocalyptic number.

2777125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2777125 is a deficient number, since it is larger than the sum of its proper divisors (957515).

2777125 is a wasteful number, since it uses less digits than its factorization.

2777125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1737 (or 1727 counting only the distinct ones).

The product of its digits is 6860, while the sum is 31.

The square root of 2777125 is about 1666.4708218268. The cubic root of 2777125 is about 140.5610985389.

The spelling of 2777125 in words is "two million, seven hundred seventy-seven thousand, one hundred twenty-five".