3520625 has 20 divisors (see below), whose sum is σ = 4536048. Its totient is φ = 2730000.

The previous prime is 3520613. The next prime is 3520663. The reversal of 3520625 is 5260253.

It is a happy number.

It is not a de Polignac number, because 3520625 - 2¹⁰ = 3519601 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3520625.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 26810 + ... + 26940.

Almost surely, 2^3520625 is an apocalyptic number.

It is an amenable number.

3520625 is a deficient number, since it is larger than the sum of its proper divisors (1015423).

3520625 is an equidigital number, since it uses as much as digits as its factorization.

3520625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194 (or 179 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 3520625 is about 1876.3328595961. The cubic root of 3520625 is about 152.1271010995.

Adding to 3520625 its reverse (5260253), we get a palindrome (8780878).

The spelling of 3520625 in words is "three million, five hundred twenty thousand, six hundred twenty-five".