2500555009 has 8 divisors (see below), whose sum is σ = 2611272960. Its totient is φ = 2390003616.

The previous prime is 2500554977. The next prime is 2500555019. The reversal of 2500555009 is 9005550052.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2500555009 - 2⁵ = 2500554977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2500555019) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10444 + ... + 71485.

It is an arithmetic number, because the mean of its divisors is an integer number (326409120).

Almost surely, 2^2500555009 is an apocalyptic number.

It is an amenable number.

2500555009 is a deficient number, since it is larger than the sum of its proper divisors (110717951).

2500555009 is a wasteful number, since it uses less digits than its factorization.

2500555009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83279.

The product of its (nonzero) digits is 11250, while the sum is 31.

The square root of 2500555009 is about 50005.5497819992. The cubic root of 2500555009 is about 1357.3092359465.

The spelling of 2500555009 in words is "two billion, five hundred million, five hundred fifty-five thousand, nine".