27205725465 has 12 divisors (see below), whose sum is σ = 47156590884. Its totient is φ = 14509720224.

The previous prime is 27205725451. The next prime is 27205725473. The reversal of 27205725465 is 56452750272.

27205725465 is a `hidden beast` number, since 2 + 7 + 20 + 572 + 54 + 6 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 18319081104 + 8886644361 = 135348^2 + 94269^2 .

It is not a de Polignac number, because 27205725465 - 2¹¹ = 27205723417 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 604571677 = 27205725465 / (2 + 7 + 2 + 0 + 5 + 7 + 2 + 5 + 4 + 6 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 27205725465.

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, 302285794 + ... + 302285883.

It is an arithmetic number, because the mean of its divisors is an integer number (3929715907).

Almost surely, 2^27205725465 is an apocalyptic number.

It is an amenable number.

27205725465 is a deficient number, since it is larger than the sum of its proper divisors (19950865419).

27205725465 is a wasteful number, since it uses less digits than its factorization.

27205725465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 604571688 (or 604571685 counting only the distinct ones).

The product of its (nonzero) digits is 1176000, while the sum is 45.

The spelling of 27205725465 in words is "twenty-seven billion, two hundred five million, seven hundred twenty-five thousand, four hundred sixty-five".