618425 has 12 divisors (see below), whose sum is σ = 794220. Its totient is φ = 477120.

The previous prime is 618421. The next prime is 618437. The reversal of 618425 is 524816.

It can be written as a sum of positive squares in 6 ways, for example, as 94249 + 524176 = 307^2 + 724^2 .

It is not a de Polignac number, because 618425 - 2² = 618421 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 618394 and 618403.

It is not an unprimeable number, because it can be changed into a prime (618421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 299 + ... + 1151.

It is an arithmetic number, because the mean of its divisors is an integer number (66185).

2⁶¹⁸⁴²⁵ is an apocalyptic number.

It is an amenable number.

618425 is a deficient number, since it is larger than the sum of its proper divisors (175795).

618425 is a wasteful number, since it uses less digits than its factorization.

618425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 892 (or 887 counting only the distinct ones).

The product of its digits is 1920, while the sum is 26.

The square root of 618425 is about 786.4000254323. The cubic root of 618425 is about 85.1979240092.

The spelling of 618425 in words is "six hundred eighteen thousand, four hundred twenty-five".