2255284240 has 80 divisors (see below), whose sum is σ = 5727419136. Its totient is φ = 819072000.

The previous prime is 2255284223. The next prime is 2255284259. The reversal of 2255284240 is 424825522.

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 2255284196 and 2255284205.

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, 1251340 + ... + 1253140.

Almost surely, 2^2255284240 is an apocalyptic number.

2255284240 is a gapful number since it is divisible by the number (20) 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 2255284240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2863709568).

2255284240 is an abundant number, since it is smaller than the sum of its proper divisors (3472134896).

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

2255284240 is a wasteful number, since it uses less digits than its factorization.

2255284240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3248 (or 3242 counting only the distinct ones).

The product of its (nonzero) digits is 51200, while the sum is 34.

The square root of 2255284240 is about 47489.8330171838. The cubic root of 2255284240 is about 1311.3957192693.

The spelling of 2255284240 in words is "two billion, two hundred fifty-five million, two hundred eighty-four thousand, two hundred forty".