505625123 has 4 divisors (see below), whose sum is σ = 527608848. Its totient is φ = 483641400.

The previous prime is 505625117. The next prime is 505625147. The reversal of 505625123 is 321526505.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 321526505 = 5 ⋅64305301.

It is a cyclic number.

It is not a de Polignac number, because 505625123 - 2¹⁴ = 505608739 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (505625173) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10991828 + ... + 10991873.

It is an arithmetic number, because the mean of its divisors is an integer number (131902212).

Almost surely, 2^505625123 is an apocalyptic number.

505625123 is a deficient number, since it is larger than the sum of its proper divisors (21983725).

505625123 is a wasteful number, since it uses less digits than its factorization.

505625123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21983724.

The product of its (nonzero) digits is 9000, while the sum is 29.

The square root of 505625123 is about 22486.1095567908. The cubic root of 505625123 is about 796.6658753827.

The spelling of 505625123 in words is "five hundred five million, six hundred twenty-five thousand, one hundred twenty-three".