122785725 has 24 divisors (see below), whose sum is σ = 203424480. Its totient is φ = 65350720.

The previous prime is 122785723. The next prime is 122785757. The reversal of 122785725 is 527587221.

It is not a de Polignac number, because 122785725 - 2¹ = 122785723 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122785723) 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 23 ways as a sum of consecutive naturals, for example, 42631 + ... + 45419.

It is an arithmetic number, because the mean of its divisors is an integer number (8476020).

Almost surely, 2^122785725 is an apocalyptic number.

122785725 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

122785725 is a deficient number, since it is larger than the sum of its proper divisors (80638755).

122785725 is a wasteful number, since it uses less digits than its factorization.

122785725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3389 (or 3384 counting only the distinct ones).

The product of its digits is 78400, while the sum is 39.

The square root of 122785725 is about 11080.8720324711. The cubic root of 122785725 is about 497.0300267813.

The spelling of 122785725 in words is "one hundred twenty-two million, seven hundred eighty-five thousand, seven hundred twenty-five".