624666425 has 12 divisors (see below), whose sum is σ = 791068416. Its totient is φ = 489099600.

The previous prime is 624666421. The next prime is 624666431. The reversal of 624666425 is 524666426.

It is not a de Polignac number, because 624666425 - 2² = 624666421 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (624666421) 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, 264641 + ... + 266990.

It is an arithmetic number, because the mean of its divisors is an integer number (65922368).

Almost surely, 2^624666425 is an apocalyptic number.

It is an amenable number.

624666425 is a deficient number, since it is larger than the sum of its proper divisors (166401991).

624666425 is a wasteful number, since it uses less digits than its factorization.

624666425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 531688 (or 531683 counting only the distinct ones).

The product of its digits is 414720, while the sum is 41.

The square root of 624666425 is about 24993.3276095841. The cubic root of 624666425 is about 854.8358382089.

Subtracting from 624666425 its reverse (524666426), we obtain a palindrome (99999999).

The spelling of 624666425 in words is "six hundred twenty-four million, six hundred sixty-six thousand, four hundred twenty-five".