525816720072 has 64 divisors (see below), whose sum is σ = 1669259433600. Its totient is φ = 150233348160.

The previous prime is 525816720061. The next prime is 525816720089. The reversal of 525816720072 is 270027618525.

525816720072 is a `hidden beast` number, since 5 + 2 + 581 + 67 + 2 + 0 + 0 + 7 + 2 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 173879679 + ... + 173882702.

It is an arithmetic number, because the mean of its divisors is an integer number (26082178650).

Almost surely, 2^525816720072 is an apocalyptic number.

It is an amenable number.

525816720072 is an abundant number, since it is smaller than the sum of its proper divisors (1143442713528).

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

525816720072 is a wasteful number, since it uses less digits than its factorization.

525816720072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 347762403 (or 347762393 counting only the distinct ones).

The product of its (nonzero) digits is 470400, while the sum is 45.

The spelling of 525816720072 in words is "five hundred twenty-five billion, eight hundred sixteen million, seven hundred twenty thousand, seventy-two".