1265102055653 has 2 divisors, whose sum is σ = 1265102055654. Its totient is φ = 1265102055652.

The previous prime is 1265102055641. The next prime is 1265102055727. The reversal of 1265102055653 is 3565502015621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 917116506244 + 347985549409 = 957662^2 + 589903^2 .

It is a cyclic number.

It is not a de Polignac number, because 1265102055653 - 2⁶ = 1265102055589 is a prime.

It is a super-2 number, since 2×1265102055653² (a number of 25 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1265102055653.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1265102055253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 632551027826 + 632551027827.

It is an arithmetic number, because the mean of its divisors is an integer number (632551027827).

Almost surely, 2^{1265102055653} is an apocalyptic number.

It is an amenable number.

1265102055653 is a deficient number, since it is larger than the sum of its proper divisors (1).

1265102055653 is an equidigital number, since it uses as much as digits as its factorization.

1265102055653 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 270000, while the sum is 41.

The spelling of 1265102055653 in words is "one trillion, two hundred sixty-five billion, one hundred two million, fifty-five thousand, six hundred fifty-three".