2500238881 has 4 divisors (see below), whose sum is σ = 2857415872. Its totient is φ = 2143061892.

The previous prime is 2500238879. The next prime is 2500238891. The reversal of 2500238881 is 1888320052.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2500238881 - 2¹ = 2500238879 is a prime.

It is a super-3 number, since 3×2500238881³ (a number of 29 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2500238881.

It is not an unprimeable number, because it can be changed into a prime (2500238891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 178588485 + ... + 178588498.

It is an arithmetic number, because the mean of its divisors is an integer number (714353968).

Almost surely, 2^2500238881 is an apocalyptic number.

It is an amenable number.

2500238881 is a deficient number, since it is larger than the sum of its proper divisors (357176991).

2500238881 is an equidigital number, since it uses as much as digits as its factorization.

2500238881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 357176990.

The product of its (nonzero) digits is 30720, while the sum is 37.

The square root of 2500238881 is about 50002.3887529386. The cubic root of 2500238881 is about 1357.2520351070.

The spelling of 2500238881 in words is "two billion, five hundred million, two hundred thirty-eight thousand, eight hundred eighty-one".