2775825 has 54 divisors (see below), whose sum is σ = 5457426. Its totient is φ = 1347840.

The previous prime is 2775781. The next prime is 2775841. The reversal of 2775825 is 5285772.

2775825 is a `hidden beast` number, since 2 + 77 + 582 + 5 = 666.

2775825 is nontrivially palindromic in base 8.

It can be written as a sum of positive squares in 9 ways, for example, as 1679616 + 1096209 = 1296^2 + 1047^2 .

It is not a de Polignac number, because 2775825 - 2⁶ = 2775761 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2775825.

It is an unprimeable number.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 37989 + ... + 38061.

2^2775825 is an apocalyptic number.

2775825 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2775825 is a deficient number, since it is larger than the sum of its proper divisors (2681601).

2775825 is a wasteful number, since it uses less digits than its factorization.

2775825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115 (or 94 counting only the distinct ones).

The product of its digits is 39200, while the sum is 36.

The square root of 2775825 is about 1666.0807303369. The cubic root of 2775825 is about 140.5391624302.

It can be divided in two parts, 2775 and 825, that added together give a square (3600 = 60²).

The spelling of 2775825 in words is "two million, seven hundred seventy-five thousand, eight hundred twenty-five".