6249999999 has 16 divisors (see below), whose sum is σ = 8462444544. Its totient is φ = 4102274400.

The previous prime is 6249999971. The next prime is 6250000021. The reversal of 6249999999 is 9999999426.

It is a happy number.

It is not a de Polignac number, because 6249999999 - 2⁹ = 6249999487 is a prime.

6249999999 is a modest number, since divided by 99999 gives 62499 as remainder.

It is a self number, because there is not a number n which added to its sum of digits gives 6249999999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6249999919) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 136114 + ... + 176144.

It is an arithmetic number, because the mean of its divisors is an integer number (528902784).

Almost surely, 2^6249999999 is an apocalyptic number.

6249999999 is a deficient number, since it is larger than the sum of its proper divisors (2212444545).

6249999999 is a wasteful number, since it uses less digits than its factorization.

6249999999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40838.

The product of its digits is 229582512, while the sum is 75.

The square root of 6249999999 is about 79056.9414978849. The cubic root of 6249999999 is about 1842.0157492220.

The spelling of 6249999999 in words is "six billion, two hundred forty-nine million, nine hundred ninety-nine thousand, nine hundred ninety-nine".