2500555000 has 40 divisors (see below), whose sum is σ = 5858812080. Its totient is φ = 1000220000.

The previous prime is 2500554977. The next prime is 2500555019. The reversal of 2500555000 is 5550052.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 245056 + ... + 255055.

It is an arithmetic number, because the mean of its divisors is an integer number (146470302).

Almost surely, 2^2500555000 is an apocalyptic number.

2500555000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2500555000 is an abundant number, since it is smaller than the sum of its proper divisors (3358257080).

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

2500555000 is an equidigital number, since it uses as much as digits as its factorization.

2500555000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 500137 (or 500118 counting only the distinct ones).

The product of its (nonzero) digits is 1250, while the sum is 22.

The square root of 2500555000 is about 50005.5496920092. The cubic root of 2500555000 is about 1357.3092343181.

The spelling of 2500555000 in words is "two billion, five hundred million, five hundred fifty-five thousand".