3215425 has 12 divisors (see below), whose sum is σ = 4085676. Its totient is φ = 2508800.

The previous prime is 3215417. The next prime is 3215447. The reversal of 3215425 is 5245123.

It can be written as a sum of positive squares in 6 ways, for example, as 7744 + 3207681 = 88^2 + 1791^2 .

It is not a de Polignac number, because 3215425 - 2³ = 3215417 is a prime.

It is a Duffinian number.

3215425 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 3215396 and 3215405.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 544 + ... + 2593.

It is an arithmetic number, because the mean of its divisors is an integer number (340473).

Almost surely, 2^3215425 is an apocalyptic number.

It is an amenable number.

3215425 is a deficient number, since it is larger than the sum of its proper divisors (870251).

3215425 is a wasteful number, since it uses less digits than its factorization.

3215425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3188 (or 3183 counting only the distinct ones).

The product of its digits is 1200, while the sum is 22.

The square root of 3215425 is about 1793.1606174573. The cubic root of 3215425 is about 147.5976562912.

The spelling of 3215425 in words is "three million, two hundred fifteen thousand, four hundred twenty-five".