625390 has 8 divisors (see below), whose sum is σ = 1125720. Its totient is φ = 250152.

The previous prime is 625369. The next prime is 625397. The reversal of 625390 is 93526.

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

It is a super-2 number, since 2×625390² = 782225304200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (625397) by changing a digit.

625390 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31260 + ... + 31279.

It is an arithmetic number, because the mean of its divisors is an integer number (140715).

2⁶²⁵³⁹⁰ is an apocalyptic number.

625390 is a deficient number, since it is larger than the sum of its proper divisors (500330).

625390 is a wasteful number, since it uses less digits than its factorization.

625390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62546.

The product of its (nonzero) digits is 1620, while the sum is 25.

The square root of 625390 is about 790.8160342330. The cubic root of 625390 is about 85.5165773859.

The spelling of 625390 in words is "six hundred twenty-five thousand, three hundred ninety".