3561625 has 8 divisors (see below), whose sum is σ = 4445064. Its totient is φ = 2849200.

The previous prime is 3561611. The next prime is 3561631. The reversal of 3561625 is 5261653.

3561625 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 135424 + 3426201 = 368^2 + 1851^2 .

It is not a de Polignac number, because 3561625 - 2¹⁵ = 3528857 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3561593 and 3561602.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14122 + ... + 14371.

It is an arithmetic number, because the mean of its divisors is an integer number (555633).

Almost surely, 2^3561625 is an apocalyptic number.

It is an amenable number.

3561625 is a deficient number, since it is larger than the sum of its proper divisors (883439).

3561625 is an equidigital number, since it uses as much as digits as its factorization.

3561625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28508 (or 28498 counting only the distinct ones).

The product of its digits is 5400, while the sum is 28.

The square root of 3561625 is about 1887.2268014205. The cubic root of 3561625 is about 152.7153635474.

Adding to 3561625 its sum of digits (28), we get a palindrome (3561653).

It can be divided in two parts, 3561 and 625, that added together give a triangular number (4186 = T₉₁).

The spelling of 3561625 in words is "three million, five hundred sixty-one thousand, six hundred twenty-five".