1255122505 has 24 divisors (see below), whose sum is σ = 1886826312. Its totient is φ = 794449152.

The previous prime is 1255122499. The next prime is 1255122559. The reversal of 1255122505 is 5052215521.

It can be written as a sum of positive squares in 4 ways, for example, as 50176 + 1255072329 = 224^2 + 35427^2 .

It is not a de Polignac number, because 1255122505 - 2⁷ = 1255122377 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 193852 + ... + 200221.

It is an arithmetic number, because the mean of its divisors is an integer number (78617763).

Almost surely, 2^1255122505 is an apocalyptic number.

It is an amenable number.

1255122505 is a deficient number, since it is larger than the sum of its proper divisors (631703807).

1255122505 is a wasteful number, since it uses less digits than its factorization.

1255122505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 394105 (or 394098 counting only the distinct ones).

The product of its (nonzero) digits is 5000, while the sum is 28.

The square root of 1255122505 is about 35427.7081533649. The cubic root of 1255122505 is about 1078.6868198652.

The spelling of 1255122505 in words is "one billion, two hundred fifty-five million, one hundred twenty-two thousand, five hundred five".