1255581096 has 288 divisors, whose sum is σ = 4156777440. Its totient is φ = 312480000.

The previous prime is 1255581079. The next prime is 1255581101. The reversal of 1255581096 is 6901855521.

It is a happy number.

It is a super-2 number, since 2×1255581096² = 3152967777265122432, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 12431446 + ... + 12431546.

It is an arithmetic number, because the mean of its divisors is an integer number (14433255).

Almost surely, 2^1255581096 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1255581096, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2078388720).

1255581096 is an abundant number, since it is smaller than the sum of its proper divisors (2901196344).

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

1255581096 is a wasteful number, since it uses less digits than its factorization.

1255581096 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197 (or 155 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 42.

The square root of 1255581096 is about 35434.1797703855. The cubic root of 1255581096 is about 1078.8181791097.

The spelling of 1255581096 in words is "one billion, two hundred fifty-five million, five hundred eighty-one thousand, ninety-six".