423725655 has 16 divisors (see below), whose sum is σ = 693728640. Its totient is φ = 220731168.

The previous prime is 423725647. The next prime is 423725677. The reversal of 423725655 is 556527324.

It is a happy number.

It is not a de Polignac number, because 423725655 - 2³ = 423725647 is a prime.

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 15 ways as a sum of consecutive naturals, for example, 327825 + ... + 329114.

It is an arithmetic number, because the mean of its divisors is an integer number (43358040).

Almost surely, 2^423725655 is an apocalyptic number.

423725655 is a deficient number, since it is larger than the sum of its proper divisors (270002985).

423725655 is a wasteful number, since it uses less digits than its factorization.

423725655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 656990.

The product of its digits is 252000, while the sum is 39.

The square root of 423725655 is about 20584.5975185331. The cubic root of 423725655 is about 751.0950847188.

It can be divided in two parts, 4237 and 25655, that added together give a palindrome (29892).

The spelling of 423725655 in words is "four hundred twenty-three million, seven hundred twenty-five thousand, six hundred fifty-five".