123612025 has 6 divisors (see below), whose sum is σ = 153278942. Its totient is φ = 98889600.

The previous prime is 123612019. The next prime is 123612067. The reversal of 123612025 is 520216321.

It can be written as a sum of positive squares in 3 ways, for example, as 24336 + 123587689 = 156^2 + 11117^2 .

It is not a de Polignac number, because 123612025 - 2³ = 123612017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123611987 and 123612005.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2472216 + ... + 2472265.

Almost surely, 2^123612025 is an apocalyptic number.

It is an amenable number.

123612025 is a deficient number, since it is larger than the sum of its proper divisors (29666917).

123612025 is an equidigital number, since it uses as much as digits as its factorization.

123612025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4944491 (or 4944486 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 123612025 is about 11118.0944860169. The cubic root of 123612025 is about 498.1424744096.

Adding to 123612025 its reverse (520216321), we get a palindrome (643828346).

The spelling of 123612025 in words is "one hundred twenty-three million, six hundred twelve thousand, twenty-five".