625138 has 8 divisors (see below), whose sum is σ = 987120. Its totient is φ = 296100.

The previous prime is 625133. The next prime is 625169. The reversal of 625138 is 831526.

It is a happy number.

625138 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (625133) by changing a digit.

625138 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8188 + ... + 8263.

It is an arithmetic number, because the mean of its divisors is an integer number (123390).

2⁶²⁵¹³⁸ is an apocalyptic number.

625138 is a deficient number, since it is larger than the sum of its proper divisors (361982).

625138 is a wasteful number, since it uses less digits than its factorization.

625138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16472.

The product of its digits is 1440, while the sum is 25.

The square root of 625138 is about 790.6566890883. The cubic root of 625138 is about 85.5050895822.

The spelling of 625138 in words is "six hundred twenty-five thousand, one hundred thirty-eight".