1255122260 has 36 divisors (see below), whose sum is σ = 3066086772. Its totient is φ = 430327296.

The previous prime is 1255122221. The next prime is 1255122289. The reversal of 1255122260 is 622215521.

It can be written as a sum of positive squares in 2 ways, for example, as 389115076 + 866007184 = 19726^2 + 29428^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 639389 + ... + 641348.

It is an arithmetic number, because the mean of its divisors is an integer number (85169077).

Almost surely, 2^1255122260 is an apocalyptic number.

1255122260 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1255122260 is an abundant number, since it is smaller than the sum of its proper divisors (1810964512).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1255122260 is a wasteful number, since it uses less digits than its factorization.

1255122260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1280760 (or 1280751 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 1255122260 is about 35427.7046956192. The cubic root of 1255122260 is about 1078.6867496786.

Adding to 1255122260 its reverse (622215521), we get a palindrome (1877337781).

The spelling of 1255122260 in words is "one billion, two hundred fifty-five million, one hundred twenty-two thousand, two hundred sixty".