1311425 has 6 divisors (see below), whose sum is σ = 1626198. Its totient is φ = 1049120.

The previous prime is 1311419. The next prime is 1311433. The reversal of 1311425 is 5241131.

It can be written as a sum of positive squares in 3 ways, for example, as 450241 + 861184 = 671^2 + 928^2 .

It is not a de Polignac number, because 1311425 - 2¹⁸ = 1049281 is a prime.

It is a Duffinian number.

It is a plaindrome in base 13.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 26204 + ... + 26253.

It is an arithmetic number, because the mean of its divisors is an integer number (271033).

2^1311425 is an apocalyptic number.

It is an amenable number.

1311425 is a deficient number, since it is larger than the sum of its proper divisors (314773).

1311425 is an equidigital number, since it uses as much as digits as its factorization.

1311425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52467 (or 52462 counting only the distinct ones).

The product of its digits is 120, while the sum is 17.

The square root of 1311425 is about 1145.1746591678. The cubic root of 1311425 is about 109.4580783765.

Adding to 1311425 its reverse (5241131), we get a palindrome (6552556).

The spelling of 1311425 in words is "one million, three hundred eleven thousand, four hundred twenty-five".