1248651285505 has 48 divisors (see below), whose sum is σ = 1666114080624. Its totient is φ = 897611120640.

The previous prime is 1248651285503. The next prime is 1248651285533. The reversal of 1248651285505 is 5055821568421.

It can be written as a sum of positive squares in 24 ways, for example, as 1161980514304 + 86670771201 = 1077952^2 + 294399^2 .

It is not a de Polignac number, because 1248651285505 - 2¹ = 1248651285503 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1248651285503) 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, 4874997 + ... + 5124733.

It is an arithmetic number, because the mean of its divisors is an integer number (34710710013).

Almost surely, 2^{1248651285505} is an apocalyptic number.

It is an amenable number.

1248651285505 is a deficient number, since it is larger than the sum of its proper divisors (417462795119).

1248651285505 is a wasteful number, since it uses less digits than its factorization.

1248651285505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249926 (or 249913 counting only the distinct ones).

The product of its (nonzero) digits is 3840000, while the sum is 52.

The spelling of 1248651285505 in words is "one trillion, two hundred forty-eight billion, six hundred fifty-one million, two hundred eighty-five thousand, five hundred five".