1255781088 has 72 divisors (see below), whose sum is σ = 3575583648. Its totient is φ = 418071552.

The previous prime is 1255781029. The next prime is 1255781141. The reversal of 1255781088 is 8801875521.

1255781088 is a `hidden beast` number, since 1 + 2 + 557 + 8 + 10 + 88 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a super-2 number, since 2×1255781088² = 3153972281956927488, which contains 22 as substring.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

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, 279145 + ... + 283607.

It is an arithmetic number, because the mean of its divisors is an integer number (49660884).

Almost surely, 2^1255781088 is an apocalyptic number.

1255781088 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1255781088 is an abundant number, since it is smaller than the sum of its proper divisors (2319802560).

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

1255781088 is a wasteful number, since it uses less digits than its factorization.

1255781088 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5456 (or 5445 counting only the distinct ones).

The product of its (nonzero) digits is 179200, while the sum is 45.

The square root of 1255781088 is about 35437.0016790360. The cubic root of 1255781088 is about 1078.8754549935.

The spelling of 1255781088 in words is "one billion, two hundred fifty-five million, seven hundred eighty-one thousand, eighty-eight".