2125000040 has 16 divisors (see below), whose sum is σ = 4781250180. Its totient is φ = 850000000.

The previous prime is 2125000039. The next prime is 2125000057. The reversal of 2125000040 is 400005212.

It can be written as a sum of positive squares in 2 ways, for example, as 2014034884 + 110965156 = 44878^2 + 10534^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2124999979 and 2125000024.

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, 26562461 + ... + 26562540.

Almost surely, 2^2125000040 is an apocalyptic number.

2125000040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2125000040 is an abundant number, since it is smaller than the sum of its proper divisors (2656250140).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2125000040 is a wasteful number, since it uses less digits than its factorization.

2125000040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53125012 (or 53125008 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 14.

The square root of 2125000040 is about 46097.7227203254. The cubic root of 2125000040 is about 1285.6408033959.

Adding to 2125000040 its reverse (400005212), we get a palindrome (2525005252).

The spelling of 2125000040 in words is "two billion, one hundred twenty-five million, forty", and thus it is an aban number.