123425 has 6 divisors (see below), whose sum is σ = 153078. Its totient is φ = 98720.

The previous prime is 123419. The next prime is 123427. The reversal of 123425 is 524321.

It can be written as a sum of positive squares in 3 ways, for example, as 5776 + 117649 = 76^2 + 343^2 .

It is not a de Polignac number, because 123425 - 2⁸ = 123169 is a prime.

It is a d-powerful number, because it can be written as 1 + 2¹³ + 4⁶ + 3⁵ + 2¹⁵ + 5⁷ .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123427) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 2444 + ... + 2493.

It is an arithmetic number, because the mean of its divisors is an integer number (25513).

2¹²³⁴²⁵ is an apocalyptic number.

It is an amenable number.

123425 is a deficient number, since it is larger than the sum of its proper divisors (29653).

123425 is an equidigital number, since it uses as much as digits as its factorization.

123425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4947 (or 4942 counting only the distinct ones).

The product of its digits is 240, while the sum is 17.

The square root of 123425 is about 351.3189434118. The cubic root of 123425 is about 49.7891117737.

Adding to 123425 its reverse (524321), we get a palindrome (647746).

The spelling of 123425 in words is "one hundred twenty-three thousand, four hundred twenty-five".