618625 has 24 divisors (see below), whose sum is σ = 906984. Its totient is φ = 420000.

The previous prime is 618619. The next prime is 618637. The reversal of 618625 is 526816.

It can be written as a sum of positive squares in 4 ways, for example, as 3969 + 614656 = 63^2 + 784^2 .

It is not a de Polignac number, because 618625 - 2⁵ = 618593 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 618593 and 618602.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6075 + ... + 6175.

It is an arithmetic number, because the mean of its divisors is an integer number (37791).

2⁶¹⁸⁶²⁵ is an apocalyptic number.

It is an amenable number.

618625 is a deficient number, since it is larger than the sum of its proper divisors (288359).

618625 is a wasteful number, since it uses less digits than its factorization.

618625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130 (or 113 counting only the distinct ones).

The product of its digits is 2880, while the sum is 28.

The square root of 618625 is about 786.5271768985. The cubic root of 618625 is about 85.2071074177.

Subtracting from 618625 its reverse (526816), we obtain a square (91809 = 303²).

The spelling of 618625 in words is "six hundred eighteen thousand, six hundred twenty-five".