1255035521 has 2 divisors, whose sum is σ = 1255035522. Its totient is φ = 1255035520.

The previous prime is 1255035511. The next prime is 1255035553. The reversal of 1255035521 is 1255305521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 683299600 + 571735921 = 26140^2 + 23911^2 .

It is a cyclic number.

It is not a de Polignac number, because 1255035521 - 2¹⁴ = 1255019137 is a prime.

It is a super-2 number, since 2×1255035521² = 3150228317943482882, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1255035511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 627517760 + 627517761.

It is an arithmetic number, because the mean of its divisors is an integer number (627517761).

Almost surely, 2^1255035521 is an apocalyptic number.

It is an amenable number.

1255035521 is a deficient number, since it is larger than the sum of its proper divisors (1).

1255035521 is an equidigital number, since it uses as much as digits as its factorization.

1255035521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7500, while the sum is 29.

The square root of 1255035521 is about 35426.4805054073. The cubic root of 1255035521 is about 1078.6619004751.

The spelling of 1255035521 in words is "one billion, two hundred fifty-five million, thirty-five thousand, five hundred twenty-one".