390225 has 36 divisors (see below), whose sum is σ = 725648. Its totient is φ = 184800.

The previous prime is 390223. The next prime is 390263. The reversal of 390225 is 522093.

It is not a de Polignac number, because 390225 - 2¹ = 390223 is a prime.

It is not an unprimeable number, because it can be changed into a prime (390223) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 9054 + ... + 9096.

2³⁹⁰²²⁵ is an apocalyptic number.

It is an amenable number.

390225 is a deficient number, since it is larger than the sum of its proper divisors (335423).

390225 is a wasteful number, since it uses less digits than its factorization.

390225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78 (or 62 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 21.

The square root of 390225 is about 624.6799180380. The cubic root of 390225 is about 73.0754833156.

The spelling of 390225 in words is "three hundred ninety thousand, two hundred twenty-five".