621125 has 8 divisors (see below), whose sum is σ = 775320. Its totient is φ = 496800.

The previous prime is 621113. The next prime is 621133. The reversal of 621125 is 521126.

621125 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 82369 + 538756 = 287^2 + 734^2 .

It is not a de Polignac number, because 621125 - 2⁸ = 620869 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2360 + ... + 2609.

It is an arithmetic number, because the mean of its divisors is an integer number (96915).

2⁶²¹¹²⁵ is an apocalyptic number.

It is an amenable number.

621125 is a deficient number, since it is larger than the sum of its proper divisors (154195).

621125 is an equidigital number, since it uses as much as digits as its factorization.

621125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4984 (or 4974 counting only the distinct ones).

The product of its digits is 120, while the sum is 17.

The square root of 621125 is about 788.1148393477. The cubic root of 621125 is about 85.3217333814.

Subtracting from 621125 its reverse (521126), we obtain a palindrome (99999).

The spelling of 621125 in words is "six hundred twenty-one thousand, one hundred twenty-five".