123005025 has 72 divisors (see below), whose sum is σ = 258900096. Its totient is φ = 55036800.

The previous prime is 123005009. The next prime is 123005089. The reversal of 123005025 is 520500321.

It is a happy number.

It is not a de Polignac number, because 123005025 - 2⁴ = 123005009 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 123004989 and 123005007.

It is an unprimeable number.

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 71 ways as a sum of consecutive naturals, for example, 30264 + ... + 34086.

Almost surely, 2^123005025 is an apocalyptic number.

123005025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

123005025 is an abundant number, since it is smaller than the sum of its proper divisors (135895071).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123005025 is a wasteful number, since it uses less digits than its factorization.

123005025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3863 (or 3855 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 18.

The square root of 123005025 is about 11090.7630485914. The cubic root of 123005025 is about 497.3257556679.

Adding to 123005025 its reverse (520500321), we get a palindrome (643505346).

The spelling of 123005025 in words is "one hundred twenty-three million, five thousand, twenty-five".