2499999916 has 6 divisors (see below), whose sum is σ = 4374999860. Its totient is φ = 1249999956.

The previous prime is 2499999883. The next prime is 2499999959. The reversal of 2499999916 is 6199999942.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 312499986 + ... + 312499993.

Almost surely, 2^2499999916 is an apocalyptic number.

It is an amenable number.

2499999916 is a deficient number, since it is larger than the sum of its proper divisors (1874999944).

2499999916 is a wasteful number, since it uses less digits than its factorization.

2499999916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 624999983 (or 624999981 counting only the distinct ones).

The product of its digits is 25509168, while the sum is 67.

The square root of 2499999916 is about 49999.9991600000. Note that the first 3 decimals coincide. The cubic root of 2499999916 is about 1357.2087930967.

The spelling of 2499999916 in words is "two billion, four hundred ninety-nine million, nine hundred ninety-nine thousand, nine hundred sixteen".