1265529983 has 2 divisors, whose sum is σ = 1265529984. Its totient is φ = 1265529982.

The previous prime is 1265529977. The next prime is 1265530009. The reversal of 1265529983 is 3899255621.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1265529983 - 2¹⁰ = 1265528959 is a prime.

It is a super-2 number, since 2×1265529983² = 3203132275743960578, which contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1265529913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 632764991 + 632764992.

It is an arithmetic number, because the mean of its divisors is an integer number (632764992).

Almost surely, 2^1265529983 is an apocalyptic number.

1265529983 is a deficient number, since it is larger than the sum of its proper divisors (1).

1265529983 is an equidigital number, since it uses as much as digits as its factorization.

1265529983 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1166400, while the sum is 50.

The square root of 1265529983 is about 35574.2882290005. The cubic root of 1265529983 is about 1081.6601077736.

The spelling of 1265529983 in words is "one billion, two hundred sixty-five million, five hundred twenty-nine thousand, nine hundred eighty-three".