2500055028 has 18 divisors (see below), whose sum is σ = 6319583634. Its totient is φ = 833351664.

The previous prime is 2500055021. The next prime is 2500055039. The reversal of 2500055028 is 8205500052.

It can be written as a sum of positive squares in only one way, i.e., 2144430864 + 355624164 = 46308^2 + 18858^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a junction number, because it is equal to n+sod(n) for n = 2500054992 and 2500055010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2500055021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 34722951 + ... + 34723022.

Almost surely, 2^2500055028 is an apocalyptic number.

It is an amenable number.

2500055028 is an abundant number, since it is smaller than the sum of its proper divisors (3819528606).

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

2500055028 is a wasteful number, since it uses less digits than its factorization.

2500055028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69445983 (or 69445978 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 27.

The square root of 2500055028 is about 50000.5502769720. The cubic root of 2500055028 is about 1357.2187661559.

The spelling of 2500055028 in words is "two billion, five hundred million, fifty-five thousand, twenty-eight".