501625405 has 4 divisors (see below), whose sum is σ = 601950492. Its totient is φ = 401300320.

The previous prime is 501625393. The next prime is 501625417. The reversal of 501625405 is 504526105.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (501625393) and next prime (501625417).

It can be written as a sum of positive squares in 2 ways, for example, as 120165444 + 381459961 = 10962^2 + 19531^2 .

It is not a de Polignac number, because 501625405 - 2¹¹ = 501623357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 50162536 + ... + 50162545.

It is an arithmetic number, because the mean of its divisors is an integer number (150487623).

Almost surely, 2^501625405 is an apocalyptic number.

It is an amenable number.

501625405 is a deficient number, since it is larger than the sum of its proper divisors (100325087).

501625405 is a wasteful number, since it uses less digits than its factorization.

501625405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100325086.

The product of its (nonzero) digits is 6000, while the sum is 28.

The square root of 501625405 is about 22396.9954458182. The cubic root of 501625405 is about 794.5596522391.

The spelling of 501625405 in words is "five hundred one million, six hundred twenty-five thousand, four hundred five".