2688425 has 12 divisors (see below), whose sum is σ = 3398220. Its totient is φ = 2109120.

The previous prime is 2688421. The next prime is 2688451. The reversal of 2688425 is 5248862.

It can be written as a sum of positive squares in 6 ways, for example, as 267289 + 2421136 = 517^2 + 1556^2 .

It is not a de Polignac number, because 2688425 - 2² = 2688421 is a prime.

It is a d-powerful number, because it can be written as 2¹⁹ + 6⁴ + 8² + 8² + 4⁸ + 2²¹ + 5² .

It is not an unprimeable number, because it can be changed into a prime (2688421) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 311 + ... + 2339.

It is an arithmetic number, because the mean of its divisors is an integer number (283185).

2^2688425 is an apocalyptic number.

2688425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2688425 is a deficient number, since it is larger than the sum of its proper divisors (709795).

2688425 is a wasteful number, since it uses less digits than its factorization.

2688425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2092 (or 2087 counting only the distinct ones).

The product of its digits is 30720, while the sum is 35.

The square root of 2688425 is about 1639.6417291591. The cubic root of 2688425 is about 139.0483933424.

It can be divided in two parts, 2688 and 425, that added together give a palindrome (3113).

The spelling of 2688425 in words is "two million, six hundred eighty-eight thousand, four hundred twenty-five".