931225 has 9 divisors (see below), whose sum is σ = 1160733. Its totient is φ = 741120.

The previous prime is 931213. The next prime is 931237. The reversal of 931225 is 522139.

The square root of 931225 is 965.

It is a perfect power (a square), and thus also a powerful number.

It is an interprime number because it is at equal distance from previous prime (931213) and next prime (931237).

It can be written as a sum of positive squares in 4 ways, for example, as 149769 + 781456 = 387^2 + 884^2 .

It is not a de Polignac number, because 931225 - 2⁵ = 931193 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 931196 and 931205.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 4729 + ... + 4921.

931225 is a Friedman number, since it can be written as (912+53)^2, using all its digits and the basic arithmetic operations.

2⁹³¹²²⁵ is an apocalyptic number.

931225 is the 965-th square number.

931225 is the 483-rd centered octagonal number.

It is an amenable number.

931225 is a deficient number, since it is larger than the sum of its proper divisors (229508).

931225 is an equidigital number, since it uses as much as digits as its factorization.

931225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 396 (or 198 counting only the distinct ones).

The product of its digits is 540, while the sum is 22.

The cubic root of 931225 is about 97.6528394009.

It can be divided in two parts, 931 and 225, that added together give a square (1156 = 34²).

The spelling of 931225 in words is "nine hundred thirty-one thousand, two hundred twenty-five".