2255234540240 has 80 divisors (see below), whose sum is σ = 5773553951040. Its totient is φ = 812420904960.

The previous prime is 2255234540239. The next prime is 2255234540261. The reversal of 2255234540240 is 420454325522.

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 = 2255234540194 and 2255234540203.

It is a congruent number.

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, 11881385 + ... + 12069704.

It is an arithmetic number, because the mean of its divisors is an integer number (72169424388).

Almost surely, 2^{2255234540240} is an apocalyptic number.

2255234540240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2255234540240 is an abundant number, since it is smaller than the sum of its proper divisors (3518319410800).

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

2255234540240 is a wasteful number, since it uses less digits than its factorization.

2255234540240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23951220 (or 23951214 counting only the distinct ones).

The product of its (nonzero) digits is 384000, while the sum is 38.

Adding to 2255234540240 its reverse (420454325522), we get a palindrome (2675688865762).

The spelling of 2255234540240 in words is "two trillion, two hundred fifty-five billion, two hundred thirty-four million, five hundred forty thousand, two hundred forty".