505425197 has 4 divisors (see below), whose sum is σ = 506286816. Its totient is φ = 504563580.

The previous prime is 505425149. The next prime is 505425203. The reversal of 505425197 is 791524505.

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 505425197 - 2⁶ = 505425133 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 505425197.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505425127) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 429929 + ... + 431102.

It is an arithmetic number, because the mean of its divisors is an integer number (126571704).

Almost surely, 2^505425197 is an apocalyptic number.

It is an amenable number.

505425197 is a deficient number, since it is larger than the sum of its proper divisors (861619).

505425197 is an equidigital number, since it uses as much as digits as its factorization.

505425197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 861618.

The product of its (nonzero) digits is 63000, while the sum is 38.

The square root of 505425197 is about 22481.6635727875. The cubic root of 505425197 is about 796.5608600187.

The spelling of 505425197 in words is "five hundred five million, four hundred twenty-five thousand, one hundred ninety-seven".