3215925 has 18 divisors (see below), whose sum is σ = 5760482. Its totient is φ = 1715040.

The previous prime is 3215923. The next prime is 3215939. The reversal of 3215925 is 5295123.

It can be written as a sum of positive squares in 3 ways, for example, as 40401 + 3175524 = 201^2 + 1782^2 .

It is not a de Polignac number, because 3215925 - 2¹ = 3215923 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3215923) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 6922 + ... + 7371.

Almost surely, 2^3215925 is an apocalyptic number.

It is an amenable number.

3215925 is a deficient number, since it is larger than the sum of its proper divisors (2544557).

3215925 is a wasteful number, since it uses less digits than its factorization.

3215925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14309 (or 14301 counting only the distinct ones).

The product of its digits is 2700, while the sum is 27.

The square root of 3215925 is about 1793.3000306697. The cubic root of 3215925 is about 147.6053063948.

The spelling of 3215925 in words is "three million, two hundred fifteen thousand, nine hundred twenty-five".