1255281798 has 16 divisors (see below), whose sum is σ = 2513609280. Its totient is φ = 417919656.

The previous prime is 1255281779. The next prime is 1255281799. The reversal of 1255281798 is 8971825521.

It is a super-2 number, since 2×1255281798² = 3151464784780225608, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1255281799) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 121528 + ... + 131451.

It is an arithmetic number, because the mean of its divisors is an integer number (157100580).

Almost surely, 2^1255281798 is an apocalyptic number.

1255281798 is an abundant number, since it is smaller than the sum of its proper divisors (1258327482).

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

1255281798 is a wasteful number, since it uses less digits than its factorization.

1255281798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253811.

The product of its digits is 403200, while the sum is 48.

The square root of 1255281798 is about 35429.9562235123. The cubic root of 1255281798 is about 1078.7324515307.

The spelling of 1255281798 in words is "one billion, two hundred fifty-five million, two hundred eighty-one thousand, seven hundred ninety-eight".