2500000016 has 20 divisors (see below), whose sum is σ = 4974663372. Its totient is φ = 1216215936.

The previous prime is 2500000001. The next prime is 2500000033. The reversal of 2500000016 is 6100000052.

It can be written as a sum of positive squares in 2 ways, for example, as 2236911616 + 263088400 = 47296^2 + 16220^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2110895 + ... + 2112078.

Almost surely, 2^2500000016 is an apocalyptic number.

It is an amenable number.

2500000016 is a deficient number, since it is larger than the sum of its proper divisors (2474663356).

2500000016 is a wasteful number, since it uses less digits than its factorization.

2500000016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4223018 (or 4223012 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 14.

The square root of 2500000016 is about 50000.0001600000. Note that the first 3 decimals coincide. The cubic root of 2500000016 is about 1357.2088111928.

Adding to 2500000016 its reverse (6100000052), we get a palindrome (8600000068).

It can be divided in two parts, 25000000 and 16, that multiplied together give a square (400000000 = 20000²).

The spelling of 2500000016 in words is "two billion, five hundred million, sixteen", and thus it is an aban number.