3211625 has 8 divisors (see below), whose sum is σ = 4008264. Its totient is φ = 2569200.

The previous prime is 3211613. The next prime is 3211639. The reversal of 3211625 is 5261123.

It can be written as a sum of positive squares in 4 ways, for example, as 361 + 3211264 = 19^2 + 1792^2 .

It is not a de Polignac number, because 3211625 - 2¹⁶ = 3146089 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3211597 and 3211606.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12722 + ... + 12971.

It is an arithmetic number, because the mean of its divisors is an integer number (501033).

Almost surely, 2^3211625 is an apocalyptic number.

It is an amenable number.

3211625 is a deficient number, since it is larger than the sum of its proper divisors (796639).

3211625 is an equidigital number, since it uses as much as digits as its factorization.

3211625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25708 (or 25698 counting only the distinct ones).

The product of its digits is 360, while the sum is 20.

The square root of 3211625 is about 1792.1007226158. The cubic root of 3211625 is about 147.5394895703.

Adding to 3211625 its reverse (5261123), we get a palindrome (8472748).

The spelling of 3211625 in words is "three million, two hundred eleven thousand, six hundred twenty-five".