1255554240 has 112 divisors (see below), whose sum is σ = 4071347712. Its totient is φ = 327678976.

The previous prime is 1255554233. The next prime is 1255554269. The reversal of 1255554240 is 424555521.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31207 + ... + 59033.

Almost surely, 2^1255554240 is an apocalyptic number.

1255554240 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 1255554240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2035673856).

1255554240 is an abundant number, since it is smaller than the sum of its proper divisors (2815793472).

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

1255554240 is a wasteful number, since it uses less digits than its factorization.

1255554240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27894 (or 27884 counting only the distinct ones).

The product of its (nonzero) digits is 40000, while the sum is 33.

The square root of 1255554240 is about 35433.8008122188. The cubic root of 1255554240 is about 1078.8104873332.

It can be divided in two parts, 125555 and 4240, that added together give a triangular number (129795 = T₅₀₉).

The spelling of 1255554240 in words is "one billion, two hundred fifty-five million, five hundred fifty-four thousand, two hundred forty".