625138750 has 20 divisors (see below), whose sum is σ = 1171762416. Its totient is φ = 250055000.

The previous prime is 625138727. The next prime is 625138753. The reversal of 625138750 is 57831526.

625138750 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (625138753) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 248806 + ... + 251305.

Almost surely, 2^625138750 is an apocalyptic number.

625138750 is a deficient number, since it is larger than the sum of its proper divisors (546623666).

625138750 is an equidigital number, since it uses as much as digits as its factorization.

625138750 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 500133 (or 500118 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 37.

The square root of 625138750 is about 25002.7748460046. The cubic root of 625138750 is about 855.0512377670.

The spelling of 625138750 in words is "six hundred twenty-five million, one hundred thirty-eight thousand, seven hundred fifty".