1255605530 has 16 divisors (see below), whose sum is σ = 2260647144. Its totient is φ = 502118400.

The previous prime is 1255605529. The next prime is 1255605551. The reversal of 1255605530 is 355065521.

It can be written as a sum of positive squares in 4 ways, for example, as 811281289 + 444324241 = 28483^2 + 21079^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34934 + ... + 61086.

Almost surely, 2^1255605530 is an apocalyptic number.

1255605530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1255605530 is a deficient number, since it is larger than the sum of its proper divisors (1005041614).

1255605530 is a wasteful number, since it uses less digits than its factorization.

1255605530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30961.

The product of its (nonzero) digits is 22500, while the sum is 32.

The square root of 1255605530 is about 35434.5245488069. The cubic root of 1255605530 is about 1078.8251771105.

The spelling of 1255605530 in words is "one billion, two hundred fifty-five million, six hundred five thousand, five hundred thirty".