1255161650 has 12 divisors (see below), whose sum is σ = 2334600762. Its totient is φ = 502064640.

The previous prime is 1255161647. The next prime is 1255161671. The reversal of 1255161650 is 561615521.

It can be written as a sum of positive squares in 3 ways, for example, as 619163689 + 635997961 = 24883^2 + 25219^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12551567 + ... + 12551666.

Almost surely, 2^1255161650 is an apocalyptic number.

1255161650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1255161650 is a deficient number, since it is larger than the sum of its proper divisors (1079439112).

1255161650 is a wasteful number, since it uses less digits than its factorization.

1255161650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25103245 (or 25103240 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 32.

The square root of 1255161650 is about 35428.2606121159. The cubic root of 1255161650 is about 1078.6980338453.

The spelling of 1255161650 in words is "one billion, two hundred fifty-five million, one hundred sixty-one thousand, six hundred fifty".