1286467983725 has 12 divisors (see below), whose sum is σ = 1625318797716. Its totient is φ = 1009756001280.

The previous prime is 1286467983721. The next prime is 1286467983737. The reversal of 1286467983725 is 5273897646821.

It can be written as a sum of positive squares in 6 ways, for example, as 37646088676 + 1248821895049 = 194026^2 + 1117507^2 .

It is not a de Polignac number, because 1286467983725 - 2² = 1286467983721 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1286467983721) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 485458292 + ... + 485460941.

It is an arithmetic number, because the mean of its divisors is an integer number (135443233143).

Almost surely, 2^{1286467983725} is an apocalyptic number.

It is an amenable number.

1286467983725 is a deficient number, since it is larger than the sum of its proper divisors (338850813991).

1286467983725 is an equidigital number, since it uses as much as digits as its factorization.

1286467983725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 970919296 (or 970919291 counting only the distinct ones).

The product of its digits is 243855360, while the sum is 68.

The spelling of 1286467983725 in words is "one trillion, two hundred eighty-six billion, four hundred sixty-seven million, nine hundred eighty-three thousand, seven hundred twenty-five".