1315225874689 has 4 divisors (see below), whose sum is σ = 1357652515840. Its totient is φ = 1272799233540.

The previous prime is 1315225874659. The next prime is 1315225874717. The reversal of 1315225874689 is 9864785225131.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1315225874689 - 2⁷ = 1315225874561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1315225874659) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21213320529 + ... + 21213320590.

It is an arithmetic number, because the mean of its divisors is an integer number (339413128960).

Almost surely, 2^{1315225874689} is an apocalyptic number.

It is an amenable number.

1315225874689 is a deficient number, since it is larger than the sum of its proper divisors (42426641151).

1315225874689 is an equidigital number, since it uses as much as digits as its factorization.

1315225874689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42426641150.

The product of its digits is 29030400, while the sum is 61.

The spelling of 1315225874689 in words is "one trillion, three hundred fifteen billion, two hundred twenty-five million, eight hundred seventy-four thousand, six hundred eighty-nine".