123291725 has 12 divisors (see below), whose sum is σ = 155165664. Its totient is φ = 97159920.

The previous prime is 123291709. The next prime is 123291739. The reversal of 123291725 is 527192321.

It is not a de Polignac number, because 123291725 - 2⁴ = 123291709 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 123291691 and 123291700.

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 35129 + ... + 38478.

It is an arithmetic number, because the mean of its divisors is an integer number (12930472).

Almost surely, 2^123291725 is an apocalyptic number.

It is an amenable number.

123291725 is a deficient number, since it is larger than the sum of its proper divisors (31873939).

123291725 is an equidigital number, since it uses as much as digits as its factorization.

123291725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73684 (or 73679 counting only the distinct ones).

The product of its digits is 7560, while the sum is 32.

The square root of 123291725 is about 11103.6806960575. The cubic root of 123291725 is about 497.7118446636.

The spelling of 123291725 in words is "one hundred twenty-three million, two hundred ninety-one thousand, seven hundred twenty-five".