1318579225 has 24 divisors (see below), whose sum is σ = 1651680000. Its totient is φ = 1044181440.

The previous prime is 1318579201. The next prime is 1318579237. The reversal of 1318579225 is 5229758131.

It is a happy number.

It is not a de Polignac number, because 1318579225 - 2¹⁵ = 1318546457 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1783906 + ... + 1784644.

It is an arithmetic number, because the mean of its divisors is an integer number (68820000).

Almost surely, 2^1318579225 is an apocalyptic number.

It is an amenable number.

1318579225 is a deficient number, since it is larger than the sum of its proper divisors (333100775).

1318579225 is a wasteful number, since it uses less digits than its factorization.

1318579225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1377 (or 1372 counting only the distinct ones).

The product of its digits is 151200, while the sum is 43.

The square root of 1318579225 is about 36312.2462125383. The cubic root of 1318579225 is about 1096.5675997001.

The spelling of 1318579225 in words is "one billion, three hundred eighteen million, five hundred seventy-nine thousand, two hundred twenty-five".