3525215 has 4 divisors (see below), whose sum is σ = 4230264. Its totient is φ = 2820168.

The previous prime is 3525209. The next prime is 3525229. The reversal of 3525215 is 5125253.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3525215 - 2⁴ = 3525199 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 352517 + ... + 352526.

It is an arithmetic number, because the mean of its divisors is an integer number (1057566).

Almost surely, 2^3525215 is an apocalyptic number.

3525215 is a deficient number, since it is larger than the sum of its proper divisors (705049).

3525215 is an equidigital number, since it uses as much as digits as its factorization.

3525215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 705048.

The product of its digits is 1500, while the sum is 23.

The square root of 3525215 is about 1877.5555917203. Note that the first 4 decimals coincide. The cubic root of 3525215 is about 152.1931840782.

The spelling of 3525215 in words is "three million, five hundred twenty-five thousand, two hundred fifteen".