2625978009 has 8 divisors (see below), whose sum is σ = 3501541792. Its totient is φ = 1750533120.

The previous prime is 2625977999. The next prime is 2625978013. The reversal of 2625978009 is 9008795262.

2625978009 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 2625978009 - 2⁴ = 2625977993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2625978029) 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, 64362 + ... + 96924.

It is an arithmetic number, because the mean of its divisors is an integer number (437692724).

Almost surely, 2^2625978009 is an apocalyptic number.

It is an amenable number.

2625978009 is a deficient number, since it is larger than the sum of its proper divisors (875563783).

2625978009 is a wasteful number, since it uses less digits than its factorization.

2625978009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59447.

The product of its (nonzero) digits is 544320, while the sum is 48.

The square root of 2625978009 is about 51244.2973315080. The cubic root of 2625978009 is about 1379.6333845489.

The spelling of 2625978009 in words is "two billion, six hundred twenty-five million, nine hundred seventy-eight thousand, nine".