123631025 has 12 divisors (see below), whose sum is σ = 175203072. Its totient is φ = 84775440.

The previous prime is 123630959. The next prime is 123631037. The reversal of 123631025 is 520136321.

It is not a de Polignac number, because 123631025 - 2¹⁴ = 123614641 is a prime.

It is a Duffinian number.

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 11 ways as a sum of consecutive naturals, for example, 353057 + ... + 353406.

It is an arithmetic number, because the mean of its divisors is an integer number (14600256).

Almost surely, 2^123631025 is an apocalyptic number.

It is an amenable number.

123631025 is a deficient number, since it is larger than the sum of its proper divisors (51572047).

123631025 is an equidigital number, since it uses as much as digits as its factorization.

123631025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 706480 (or 706475 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 123631025 is about 11118.9489161521. The cubic root of 123631025 is about 498.1679957188.

Adding to 123631025 its reverse (520136321), we get a palindrome (643767346).

The spelling of 123631025 in words is "one hundred twenty-three million, six hundred thirty-one thousand, twenty-five".