505725696 has 108 divisors (see below), whose sum is σ = 1666489552. Its totient is φ = 144488448.

The previous prime is 505725691. The next prime is 505725721. The reversal of 505725696 is 696527505.

505725696 is a `hidden beast` number, since 505 + 7 + 2 + 56 + 96 = 666.

It is not an unprimeable number, because it can be changed into a prime (505725691) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 450 + ... + 31806.

Almost surely, 2^505725696 is an apocalyptic number.

505725696 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 505725696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (833244776).

505725696 is an abundant number, since it is smaller than the sum of its proper divisors (1160763856).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

505725696 is a wasteful number, since it uses less digits than its factorization.

505725696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31386 (or 31369 counting only the distinct ones).

The product of its (nonzero) digits is 567000, while the sum is 45.

The square root of 505725696 is about 22488.3457817599. The cubic root of 505725696 is about 796.7186930148.

The spelling of 505725696 in words is "five hundred five million, seven hundred twenty-five thousand, six hundred ninety-six".