625998 has 16 divisors (see below), whose sum is σ = 1265616. Its totient is φ = 206400.

The previous prime is 625997. The next prime is 626009. The reversal of 625998 is 899526.

It is a happy number.

625998 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 (625997) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90 + ... + 1122.

It is an arithmetic number, because the mean of its divisors is an integer number (79101).

2⁶²⁵⁹⁹⁸ is an apocalyptic number.

625998 is an abundant number, since it is smaller than the sum of its proper divisors (639618).

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

625998 is a wasteful number, since it uses less digits than its factorization.

625998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1139.

The product of its digits is 38880, while the sum is 39.

The square root of 625998 is about 791.2003538927. The cubic root of 625998 is about 85.5442812927.

The spelling of 625998 in words is "six hundred twenty-five thousand, nine hundred ninety-eight".