27857327465725 has 24 divisors (see below), whose sum is σ = 36440018002080. Its totient is φ = 21067123608000.

The previous prime is 27857327465713. The next prime is 27857327465743. The reversal of 27857327465725 is 52756472375872.

It is not a de Polignac number, because 27857327465725 - 2²¹ = 27857325368573 is a prime.

It is a super-3 number, since 3×27857327465725³ (a number of 41 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 63389491 + ... + 63827440.

It is an arithmetic number, because the mean of its divisors is an integer number (1518334083420).

Almost surely, 2^{27857327465725} is an apocalyptic number.

27857327465725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

27857327465725 is a deficient number, since it is larger than the sum of its proper divisors (8582690536355).

27857327465725 is a wasteful number, since it uses less digits than its factorization.

27857327465725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127217421 (or 127217416 counting only the distinct ones).

The product of its digits is 1382976000, while the sum is 70.

The spelling of 27857327465725 in words is "twenty-seven trillion, eight hundred fifty-seven billion, three hundred twenty-seven million, four hundred sixty-five thousand, seven hundred twenty-five".