2500028789 has 4 divisors (see below), whose sum is σ = 2647089324. Its totient is φ = 2352968256.

The previous prime is 2500028761. The next prime is 2500028801. The reversal of 2500028789 is 9878200052.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1680180100 + 819848689 = 40990^2 + 28633^2 .

It is a cyclic number.

It is not a de Polignac number, because 2500028789 - 2⁸ = 2500028533 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2500028719) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73530242 + ... + 73530275.

It is an arithmetic number, because the mean of its divisors is an integer number (661772331).

Almost surely, 2^2500028789 is an apocalyptic number.

It is an amenable number.

2500028789 is a deficient number, since it is larger than the sum of its proper divisors (147060535).

2500028789 is a wasteful number, since it uses less digits than its factorization.

2500028789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147060534.

The product of its (nonzero) digits is 80640, while the sum is 41.

The square root of 2500028789 is about 50000.2878891712. The cubic root of 2500028789 is about 1357.2140179687.

The spelling of 2500028789 in words is "two billion, five hundred million, twenty-eight thousand, seven hundred eighty-nine".