1315804225 has 6 divisors (see below), whose sum is σ = 1631597270. Its totient is φ = 1052643360.

The previous prime is 1315804187. The next prime is 1315804247. The reversal of 1315804225 is 5224085131.

It can be written as a sum of positive squares in 3 ways, for example, as 7969329 + 1307834896 = 2823^2 + 36164^2 .

It is not a de Polignac number, because 1315804225 - 2¹⁷ = 1315673153 is a prime.

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, 26316060 + ... + 26316109.

Almost surely, 2^1315804225 is an apocalyptic number.

It is an amenable number.

1315804225 is a deficient number, since it is larger than the sum of its proper divisors (315793045).

1315804225 is an equidigital number, since it uses as much as digits as its factorization.

1315804225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52632179 (or 52632174 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 31.

The square root of 1315804225 is about 36274.0158377867. The cubic root of 1315804225 is about 1095.7978033880.

Adding to 1315804225 its reverse (5224085131), we get a palindrome (6539889356).

The spelling of 1315804225 in words is "one billion, three hundred fifteen million, eight hundred four thousand, two hundred twenty-five".