1313825 has 6 divisors (see below), whose sum is σ = 1629174. Its totient is φ = 1051040.

The previous prime is 1313813. The next prime is 1313827. The reversal of 1313825 is 5283131.

It can be written as a sum of positive squares in 3 ways, for example, as 305809 + 1008016 = 553^2 + 1004^2 .

It is not a de Polignac number, because 1313825 - 2⁶ = 1313761 is a prime.

It is a super-2 number, since 2×1313825² = 3452272261250, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1313825.

It is not an unprimeable number, because it can be changed into a prime (1313827) 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, 26252 + ... + 26301.

It is an arithmetic number, because the mean of its divisors is an integer number (271529).

2^1313825 is an apocalyptic number.

It is an amenable number.

1313825 is a deficient number, since it is larger than the sum of its proper divisors (315349).

1313825 is an equidigital number, since it uses as much as digits as its factorization.

1313825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52563 (or 52558 counting only the distinct ones).

The product of its digits is 720, while the sum is 23.

The square root of 1313825 is about 1146.2220552755. Note that the first 3 decimals coincide. The cubic root of 1313825 is about 109.5248096797.

Adding to 1313825 its reverse (5283131), we get a palindrome (6596956).

The spelling of 1313825 in words is "one million, three hundred thirteen thousand, eight hundred twenty-five".