1255534457 has 2 divisors, whose sum is σ = 1255534458. Its totient is φ = 1255534456.

The previous prime is 1255534447. The next prime is 1255534529. The reversal of 1255534457 is 7544355521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1251107641 + 4426816 = 35371^2 + 2104^2 .

It is a cyclic number.

It is not a de Polignac number, because 1255534457 - 2²⁶ = 1188425593 is a prime.

It is not a weakly prime, because it can be changed into another prime (1255534447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 627767228 + 627767229.

It is an arithmetic number, because the mean of its divisors is an integer number (627767229).

Almost surely, 2^1255534457 is an apocalyptic number.

It is an amenable number.

1255534457 is a deficient number, since it is larger than the sum of its proper divisors (1).

1255534457 is an equidigital number, since it uses as much as digits as its factorization.

1255534457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 420000, while the sum is 41.

The square root of 1255534457 is about 35433.5216567589. The cubic root of 1255534457 is about 1078.8048212511.

Adding to 1255534457 its reverse (7544355521), we get a palindrome (8799889978).

The spelling of 1255534457 in words is "one billion, two hundred fifty-five million, five hundred thirty-four thousand, four hundred fifty-seven".