2305255440 has 80 divisors (see below), whose sum is σ = 7220037888. Its totient is φ = 608391168.

The previous prime is 2305255417. The next prime is 2305255451. The reversal of 2305255440 is 445525032.

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

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 2305255398 and 2305255407.

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, 26232 + ... + 72791.

Almost surely, 2^2305255440 is an apocalyptic number.

2305255440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2305255440 is an abundant number, since it is smaller than the sum of its proper divisors (4914782448).

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

2305255440 is a wasteful number, since it uses less digits than its factorization.

2305255440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99136 (or 99130 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 30.

The square root of 2305255440 is about 48013.0757190164. The cubic root of 2305255440 is about 1321.0107501852.

The spelling of 2305255440 in words is "two billion, three hundred five million, two hundred fifty-five thousand, four hundred forty".