216057717725 has 12 divisors (see below), whose sum is σ = 268130668896. Its totient is φ = 172704820080.

The previous prime is 216057717611. The next prime is 216057717731. The reversal of 216057717725 is 527717750612.

216057717725 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 216057717725 - 2¹⁴ = 216057701341 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3502667 + ... + 3563816.

It is an arithmetic number, because the mean of its divisors is an integer number (22344222408).

Almost surely, 2^216057717725 is an apocalyptic number.

216057717725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

216057717725 is a deficient number, since it is larger than the sum of its proper divisors (52072951171).

216057717725 is a wasteful number, since it uses less digits than its factorization.

216057717725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7067716 (or 7067711 counting only the distinct ones).

The product of its (nonzero) digits is 1440600, while the sum is 50.

The spelling of 216057717725 in words is "two hundred sixteen billion, fifty-seven million, seven hundred seventeen thousand, seven hundred twenty-five".