2555500040 has 64 divisors (see below), whose sum is σ = 5904662400. Its totient is φ = 995023872.

The previous prime is 2555500037. The next prime is 2555500049. The reversal of 2555500040 is 400055552.

It is a junction number, because it is equal to n+sod(n) for n = 2555499982 and 2555500009.

It is not an unprimeable number, because it can be changed into a prime (2555500049) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 237824 + ... + 248336.

It is an arithmetic number, because the mean of its divisors is an integer number (92260350).

Almost surely, 2^2555500040 is an apocalyptic number.

2555500040 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 2555500040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2952331200).

2555500040 is an abundant number, since it is smaller than the sum of its proper divisors (3349162360).

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

2555500040 is a wasteful number, since it uses less digits than its factorization.

2555500040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10686 (or 10682 counting only the distinct ones).

The product of its (nonzero) digits is 5000, while the sum is 26.

The square root of 2555500040 is about 50551.9538692621. The cubic root of 2555500040 is about 1367.1787431315.

Adding to 2555500040 its reverse (400055552), we get a palindrome (2955555592).

The spelling of 2555500040 in words is "two billion, five hundred fifty-five million, five hundred thousand, forty".