27925531765 has 12 divisors (see below), whose sum is σ = 35030972844. Its totient is φ = 21369100544.

The previous prime is 27925531757. The next prime is 27925531793. The reversal of 27925531765 is 56713552972.

It can be written as a sum of positive squares in 2 ways, for example, as 15073455076 + 12852076689 = 122774^2 + 113367^2 .

It is not a de Polignac number, because 27925531765 - 2³ = 27925531757 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5276284 + ... + 5281573.

It is an arithmetic number, because the mean of its divisors is an integer number (2919247737).

Almost surely, 2^27925531765 is an apocalyptic number.

It is an amenable number.

27925531765 is a deficient number, since it is larger than the sum of its proper divisors (7105441079).

27925531765 is a wasteful number, since it uses less digits than its factorization.

27925531765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10557908 (or 10557885 counting only the distinct ones).

The product of its digits is 3969000, while the sum is 52.

The spelling of 27925531765 in words is "twenty-seven billion, nine hundred twenty-five million, five hundred thirty-one thousand, seven hundred sixty-five".