625116538 has 16 divisors (see below), whose sum is σ = 945089640. Its totient is φ = 310093056.

The previous prime is 625116533. The next prime is 625116539. The reversal of 625116538 is 835611526.

It can be written as a sum of positive squares in 4 ways, for example, as 561547809 + 63568729 = 23697^2 + 7973^2 .

It is a super-2 number, since 2×625116538² = 781541372162210888, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 625116497 and 625116506.

It is not an unprimeable number, because it can be changed into a prime (625116533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 298198 + ... + 300286.

Almost surely, 2^625116538 is an apocalyptic number.

625116538 is a deficient number, since it is larger than the sum of its proper divisors (319973102).

625116538 is a wasteful number, since it uses less digits than its factorization.

625116538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3201.

The product of its digits is 43200, while the sum is 37.

The square root of 625116538 is about 25002.3306513613. The cubic root of 625116538 is about 855.0411106163.

The spelling of 625116538 in words is "six hundred twenty-five million, one hundred sixteen thousand, five hundred thirty-eight".