1255784881 has 16 divisors (see below), whose sum is σ = 1381580928. Its totient is φ = 1134403200.

The previous prime is 1255784861. The next prime is 1255784891. The reversal of 1255784881 is 1884875521.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1255784881 - 2¹¹ = 1255782833 is a prime.

It is a super-2 number, since 2×1255784881² = 3153991334696368322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1255784821) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 121486 + ... + 131416.

It is an arithmetic number, because the mean of its divisors is an integer number (86348808).

Almost surely, 2^1255784881 is an apocalyptic number.

It is an amenable number.

1255784881 is a deficient number, since it is larger than the sum of its proper divisors (125796047).

1255784881 is a wasteful number, since it uses less digits than its factorization.

1255784881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10152.

The product of its digits is 716800, while the sum is 49.

The square root of 1255784881 is about 35437.0551965030. The cubic root of 1255784881 is about 1078.8765412153.

The spelling of 1255784881 in words is "one billion, two hundred fifty-five million, seven hundred eighty-four thousand, eight hundred eighty-one".