1312225 has 6 divisors (see below), whose sum is σ = 1627190. Its totient is φ = 1049760.

The previous prime is 1312211. The next prime is 1312229. The reversal of 1312225 is 5222131.

It can be written as a sum of positive squares in 3 ways, for example, as 5776 + 1306449 = 76^2 + 1143^2 .

It is not a de Polignac number, because 1312225 - 2¹³ = 1304033 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1312199 and 1312208.

It is not an unprimeable number, because it can be changed into a prime (1312229) 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, 26220 + ... + 26269.

2^1312225 is an apocalyptic number.

It is an amenable number.

1312225 is a deficient number, since it is larger than the sum of its proper divisors (314965).

1312225 is an equidigital number, since it uses as much as digits as its factorization.

1312225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52499 (or 52494 counting only the distinct ones).

The product of its digits is 120, while the sum is 16.

The square root of 1312225 is about 1145.5238976119. The cubic root of 1312225 is about 109.4803311836.

Adding to 1312225 its reverse (5222131), we get a palindrome (6534356).

The spelling of 1312225 in words is "one million, three hundred twelve thousand, two hundred twenty-five".