123578825 has 6 divisors (see below), whose sum is σ = 153237774. Its totient is φ = 98863040.

The previous prime is 123578789. The next prime is 123578857. The reversal of 123578825 is 528875321.

It can be written as a sum of positive squares in 3 ways, for example, as 524176 + 123054649 = 724^2 + 11093^2 .

It is not a de Polignac number, because 123578825 - 2⁶ = 123578761 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2471552 + ... + 2471601.

It is an arithmetic number, because the mean of its divisors is an integer number (25539629).

Almost surely, 2^123578825 is an apocalyptic number.

It is an amenable number.

123578825 is a deficient number, since it is larger than the sum of its proper divisors (29658949).

123578825 is an equidigital number, since it uses as much as digits as its factorization.

123578825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4943163 (or 4943158 counting only the distinct ones).

The product of its digits is 134400, while the sum is 41.

The square root of 123578825 is about 11116.6013241458. The cubic root of 123578825 is about 498.0978730018.

The spelling of 123578825 in words is "one hundred twenty-three million, five hundred seventy-eight thousand, eight hundred twenty-five".