905225 has 6 divisors (see below), whose sum is σ = 1122510. Its totient is φ = 724160.

The previous prime is 905213. The next prime is 905227. The reversal of 905225 is 522509.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 4624 + 900601 = 68^2 + 949^2 .

It is not a de Polignac number, because 905225 - 2⁴ = 905209 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 905225.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (905227) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 18080 + ... + 18129.

It is an arithmetic number, because the mean of its divisors is an integer number (187085).

2⁹⁰⁵²²⁵ is an apocalyptic number.

It is an amenable number.

905225 is a deficient number, since it is larger than the sum of its proper divisors (217285).

905225 is a wasteful number, since it uses less digits than its factorization.

905225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36219 (or 36214 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 905225 is about 951.4331295472. The cubic root of 905225 is about 96.7354181275.

The spelling of 905225 in words is "nine hundred five thousand, two hundred twenty-five".