1318105025 has 6 divisors (see below), whose sum is σ = 1634450262. Its totient is φ = 1054484000.

The previous prime is 1318104971. The next prime is 1318105037. The reversal of 1318105025 is 5205018131.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 124609 + 1317980416 = 353^2 + 36304^2 .

It is not a de Polignac number, because 1318105025 - 2²⁰ = 1317056449 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1318104985 and 1318105003.

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, 26362076 + ... + 26362125.

It is an arithmetic number, because the mean of its divisors is an integer number (272408377).

Almost surely, 2^1318105025 is an apocalyptic number.

It is an amenable number.

1318105025 is a deficient number, since it is larger than the sum of its proper divisors (316345237).

1318105025 is an equidigital number, since it uses as much as digits as its factorization.

1318105025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52724211 (or 52724206 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 26.

The square root of 1318105025 is about 36305.7161477363. The cubic root of 1318105025 is about 1096.4361312495.

The spelling of 1318105025 in words is "one billion, three hundred eighteen million, one hundred five thousand, twenty-five".