1255491346560 has 256 divisors, whose sum is σ = 4472169045120. Its totient is φ = 296937881600.

The previous prime is 1255491346559. The next prime is 1255491346583. The reversal of 1255491346560 is 656431945521.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 140974 + ... + 1590866.

Almost surely, 2^{1255491346560} is an apocalyptic number.

1255491346560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1255491346560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2236084522560).

1255491346560 is an abundant number, since it is smaller than the sum of its proper divisors (3216677698560).

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

1255491346560 is a wasteful number, since it uses less digits than its factorization.

1255491346560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1449967 (or 1449955 counting only the distinct ones).

The product of its (nonzero) digits is 3888000, while the sum is 51.

The spelling of 1255491346560 in words is "one trillion, two hundred fifty-five billion, four hundred ninety-one million, three hundred forty-six thousand, five hundred sixty".