1255775357 has 2 divisors, whose sum is σ = 1255775358. Its totient is φ = 1255775356.

The previous prime is 1255775327. The next prime is 1255775359. The reversal of 1255775357 is 7535775521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1128220921 + 127554436 = 33589^2 + 11294^2 .

It is a cyclic number.

It is not a de Polignac number, because 1255775357 - 2²⁴ = 1238998141 is a prime.

Together with 1255775359, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1255775359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 627887678 + 627887679.

It is an arithmetic number, because the mean of its divisors is an integer number (627887679).

Almost surely, 2^1255775357 is an apocalyptic number.

It is an amenable number.

1255775357 is a deficient number, since it is larger than the sum of its proper divisors (1).

1255775357 is an equidigital number, since it uses as much as digits as its factorization.

1255775357 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1286250, while the sum is 47.

The square root of 1255775357 is about 35436.9208171365. The cubic root of 1255775357 is about 1078.8738137721.

The spelling of 1255775357 in words is "one billion, two hundred fifty-five million, seven hundred seventy-five thousand, three hundred fifty-seven".