2500181000 has 64 divisors (see below), whose sum is σ = 6039221760. Its totient is φ = 967800000.

The previous prime is 2500180999. The next prime is 2500181011. The reversal of 2500181000 is 1810052.

It is a super-2 number, since 2×2500181000² = 12501810065522000000, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2500181000.

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, 9326 + ... + 71325.

It is an arithmetic number, because the mean of its divisors is an integer number (94362840).

Almost surely, 2^2500181000 is an apocalyptic number.

2500181000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2500181000 is an abundant number, since it is smaller than the sum of its proper divisors (3539040760).

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

2500181000 is a wasteful number, since it uses less digits than its factorization.

2500181000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80703 (or 80689 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 17.

The square root of 2500181000 is about 50001.8099672402. The cubic root of 2500181000 is about 1357.2415614796.

Adding to 2500181000 its reverse (1810052), we get a palindrome (2501991052).

The spelling of 2500181000 in words is "two billion, five hundred million, one hundred eighty-one thousand".