1255690853 has 2 divisors, whose sum is σ = 1255690854. Its totient is φ = 1255690852.

The previous prime is 1255690847. The next prime is 1255690879. The reversal of 1255690853 is 3580965521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 793999684 + 461691169 = 28178^2 + 21487^2 .

It is a cyclic number.

It is not a de Polignac number, because 1255690853 - 2⁴ = 1255690837 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1255690453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 627845426 + 627845427.

It is an arithmetic number, because the mean of its divisors is an integer number (627845427).

Almost surely, 2^1255690853 is an apocalyptic number.

It is an amenable number.

1255690853 is a deficient number, since it is larger than the sum of its proper divisors (1).

1255690853 is an equidigital number, since it uses as much as digits as its factorization.

1255690853 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324000, while the sum is 44.

The square root of 1255690853 is about 35435.7284812941. The cubic root of 1255690853 is about 1078.8496132659.

The spelling of 1255690853 in words is "one billion, two hundred fifty-five million, six hundred ninety thousand, eight hundred fifty-three".