870225 has 24 divisors (see below), whose sum is σ = 1479072. Its totient is φ = 451200.

The previous prime is 870223. The next prime is 870229. The reversal of 870225 is 522078.

870225 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 870225 - 2¹ = 870223 is a prime.

It is a Curzon number.

870225 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 870195 and 870204.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 870225.

It is not an unprimeable number, because it can be changed into a prime (870223) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2934 + ... + 3216.

It is an arithmetic number, because the mean of its divisors is an integer number (61628).

2⁸⁷⁰²²⁵ is an apocalyptic number.

It is an amenable number.

870225 is a deficient number, since it is larger than the sum of its proper divisors (608847).

870225 is a wasteful number, since it uses less digits than its factorization.

870225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 337 (or 332 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 24.

The square root of 870225 is about 932.8585101718. The cubic root of 870225 is about 95.4722560418.

The spelling of 870225 in words is "eight hundred seventy thousand, two hundred twenty-five".