2656625 has 16 divisors (see below), whose sum is σ = 3386448. Its totient is φ = 2080000.

The previous prime is 2656601. The next prime is 2656627. The reversal of 2656625 is 5266562.

It can be written as a sum of positive squares in 8 ways, for example, as 58081 + 2598544 = 241^2 + 1612^2 .

It is not a de Polignac number, because 2656625 - 2¹⁸ = 2394481 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2656591 and 2656600.

It is not an unprimeable number, because it can be changed into a prime (2656627) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6425 + ... + 6825.

It is an arithmetic number, because the mean of its divisors is an integer number (211653).

2^2656625 is an apocalyptic number.

2656625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2656625 is a deficient number, since it is larger than the sum of its proper divisors (729823).

2656625 is an equidigital number, since it uses as much as digits as its factorization.

2656625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 469 (or 459 counting only the distinct ones).

The product of its digits is 21600, while the sum is 32.

The square root of 2656625 is about 1629.9156419889. The cubic root of 2656625 is about 138.4979733572.

It can be divided in two parts, 265 and 6625, that multiplied together give a square (1755625 = 1325²).

The spelling of 2656625 in words is "two million, six hundred fifty-six thousand, six hundred twenty-five".