123565625 has 12 divisors (see below), whose sum is σ = 154451052. Its totient is φ = 98850000.

The previous prime is 123565583. The next prime is 123565627. The reversal of 123565625 is 526565321.

It can be written as a sum of positive squares in 6 ways, for example, as 122832889 + 732736 = 11083^2 + 856^2 .

It is not a de Polignac number, because 123565625 - 2¹⁰ = 123564601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123565627) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 16646 + ... + 22895.

It is an arithmetic number, because the mean of its divisors is an integer number (12870921).

Almost surely, 2^123565625 is an apocalyptic number.

It is an amenable number.

123565625 is a deficient number, since it is larger than the sum of its proper divisors (30885427).

123565625 is an frugal number, since it uses more digits than its factorization.

123565625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39566 (or 39546 counting only the distinct ones).

The product of its digits is 54000, while the sum is 35.

The square root of 123565625 is about 11116.0076016527. The cubic root of 123565625 is about 498.0801376926.

The spelling of 123565625 in words is "one hundred twenty-three million, five hundred sixty-five thousand, six hundred twenty-five".