624425161 has 4 divisors (see below), whose sum is σ = 624547792. Its totient is φ = 624302532.

The previous prime is 624425159. The next prime is 624425173. The reversal of 624425161 is 161524426.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 624425161 - 2¹ = 624425159 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (624425141) 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 3 ways as a sum of consecutive naturals, for example, 53331 + ... + 63976.

It is an arithmetic number, because the mean of its divisors is an integer number (156136948).

Almost surely, 2^624425161 is an apocalyptic number.

It is an amenable number.

624425161 is a deficient number, since it is larger than the sum of its proper divisors (122631).

624425161 is a wasteful number, since it uses less digits than its factorization.

624425161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122630.

The product of its digits is 11520, while the sum is 31.

The square root of 624425161 is about 24988.5005752646. The cubic root of 624425161 is about 854.7257700386.

Adding to 624425161 its reverse (161524426), we get a palindrome (785949587).

The spelling of 624425161 in words is "six hundred twenty-four million, four hundred twenty-five thousand, one hundred sixty-one".