1318505610225 has 48 divisors (see below), whose sum is σ = 2197459353600. Its totient is φ = 697565332800.

The previous prime is 1318505610187. The next prime is 1318505610229. The reversal of 1318505610225 is 5220165058131.

It is not a de Polignac number, because 1318505610225 - 2⁶ = 1318505610161 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1318505610229) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6042576 + ... + 6256974.

It is an arithmetic number, because the mean of its divisors is an integer number (45780403200).

Almost surely, 2^{1318505610225} is an apocalyptic number.

1318505610225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1318505610225 is a deficient number, since it is larger than the sum of its proper divisors (878953743375).

1318505610225 is a wasteful number, since it uses less digits than its factorization.

1318505610225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215070 (or 215065 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 39.

The spelling of 1318505610225 in words is "one trillion, three hundred eighteen billion, five hundred five million, six hundred ten thousand, two hundred twenty-five".