505243125 has 30 divisors (see below), whose sum is σ = 911962766. Its totient is φ = 269460000.

The previous prime is 505243061. The next prime is 505243187. The reversal of 505243125 is 521342505.

It is a happy number.

It can be written as a sum of positive squares in 5 ways, for example, as 335878929 + 169364196 = 18327^2 + 13014^2 .

It is not a de Polignac number, because 505243125 - 2⁶ = 505243061 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 39286 + ... + 50535.

Almost surely, 2^505243125 is an apocalyptic number.

It is an amenable number.

505243125 is a deficient number, since it is larger than the sum of its proper divisors (406719641).

505243125 is an equidigital number, since it uses as much as digits as its factorization.

505243125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89847 (or 89829 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

The square root of 505243125 is about 22477.6138635755. The cubic root of 505243125 is about 796.4651987495.

The spelling of 505243125 in words is "five hundred five million, two hundred forty-three thousand, one hundred twenty-five".