3216025 has 12 divisors (see below), whose sum is σ = 4014252. Its totient is φ = 2555840.

The previous prime is 3216023. The next prime is 3216029. The reversal of 3216025 is 5206123.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 4761 + 3211264 = 69^2 + 1792^2 .

It is not a de Polignac number, because 3216025 - 2¹ = 3216023 is a prime.

It is a Duffinian number.

3216025 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 3215993 and 3216011.

It is not an unprimeable number, because it can be changed into a prime (3216023) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4599 + ... + 5251.

It is an arithmetic number, because the mean of its divisors is an integer number (334521).

Almost surely, 2^3216025 is an apocalyptic number.

It is an amenable number.

3216025 is a deficient number, since it is larger than the sum of its proper divisors (798227).

3216025 is a wasteful number, since it uses less digits than its factorization.

3216025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 860 (or 855 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 3216025 is about 1793.3279120116. The cubic root of 3216025 is about 147.6068363204.

The spelling of 3216025 in words is "three million, two hundred sixteen thousand, twenty-five".