1263025502653 has 2 divisors, whose sum is σ = 1263025502654. Its totient is φ = 1263025502652.

The previous prime is 1263025502623. The next prime is 1263025502671. The reversal of 1263025502653 is 3562055203621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1191671339769 + 71354162884 = 1091637^2 + 267122^2 .

It is a cyclic number.

It is not a de Polignac number, because 1263025502653 - 2⁵ = 1263025502621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1263025502623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 631512751326 + 631512751327.

It is an arithmetic number, because the mean of its divisors is an integer number (631512751327).

Almost surely, 2^{1263025502653} is an apocalyptic number.

It is an amenable number.

1263025502653 is a deficient number, since it is larger than the sum of its proper divisors (1).

1263025502653 is an equidigital number, since it uses as much as digits as its factorization.

1263025502653 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324000, while the sum is 40.

The spelling of 1263025502653 in words is "one trillion, two hundred sixty-three billion, twenty-five million, five hundred two thousand, six hundred fifty-three".