505720305525 has 24 divisors (see below), whose sum is σ = 864956112480. Its totient is φ = 260416891840.

The previous prime is 505720305523. The next prime is 505720305527. The reversal of 505720305525 is 525503027505.

It is an interprime number because it is at equal distance from previous prime (505720305523) and next prime (505720305527).

It is not a de Polignac number, because 505720305525 - 2¹ = 505720305523 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505720305523) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 116255367 + ... + 116259716.

It is an arithmetic number, because the mean of its divisors is an integer number (36039838020).

Almost surely, 2^505720305525 is an apocalyptic number.

It is an amenable number.

505720305525 is a deficient number, since it is larger than the sum of its proper divisors (359235806955).

505720305525 is a wasteful number, since it uses less digits than its factorization.

505720305525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232515125 (or 232515120 counting only the distinct ones).

The product of its (nonzero) digits is 262500, while the sum is 39.

The spelling of 505720305525 in words is "five hundred five billion, seven hundred twenty million, three hundred five thousand, five hundred twenty-five".