3215625 has 48 divisors (see below), whose sum is σ = 6249600. Its totient is φ = 1470000.

The previous prime is 3215623. The next prime is 3215629. The reversal of 3215625 is 5265123.

It is not a de Polignac number, because 3215625 - 2¹ = 3215623 is a prime.

Its product of digits (1800) is a multiple of the sum of its prime divisors (15).

It is a junction number, because it is equal to n+sod(n) for n = 3215595 and 3215604.

It is not an unprimeable number, because it can be changed into a prime (3215623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 459372 + ... + 459378.

It is an arithmetic number, because the mean of its divisors is an integer number (130200).

Almost surely, 2^3215625 is an apocalyptic number.

3215625 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

3215625 is a deficient number, since it is larger than the sum of its proper divisors (3033975).

3215625 is an frugal number, since it uses more digits than its factorization.

3215625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49 (or 15 counting only the distinct ones).

The product of its digits is 1800, while the sum is 24.

The square root of 3215625 is about 1793.2163840429. The cubic root of 3215625 is about 147.6007164278.

The spelling of 3215625 in words is "three million, two hundred fifteen thousand, six hundred twenty-five".