123285025 has 24 divisors (see below), whose sum is σ = 157088160. Its totient is φ = 95948160.

The previous prime is 123285023. The next prime is 123285031. The reversal of 123285025 is 520582321.

It is not a de Polignac number, because 123285025 - 2¹ = 123285023 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 123284984 and 123285002.

It is not an unprimeable number, because it can be changed into a prime (123285023) 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 23 ways as a sum of consecutive naturals, for example, 148662 + ... + 149488.

It is an arithmetic number, because the mean of its divisors is an integer number (6545340).

Almost surely, 2^123285025 is an apocalyptic number.

It is an amenable number.

123285025 is a deficient number, since it is larger than the sum of its proper divisors (33803135).

123285025 is an equidigital number, since it uses as much as digits as its factorization.

123285025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 993 (or 988 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 28.

The square root of 123285025 is about 11103.3789901993. The cubic root of 123285025 is about 497.7028288389.

The spelling of 123285025 in words is "one hundred twenty-three million, two hundred eighty-five thousand, twenty-five".