27565361025 has 48 divisors (see below), whose sum is σ = 50795409600. Its totient is φ = 13108469760.

The previous prime is 27565361017. The next prime is 27565361029. The reversal of 27565361025 is 52016356572.

It is not a de Polignac number, because 27565361025 - 2³ = 27565361017 is a prime.

It is not an unprimeable number, because it can be changed into a prime (27565361029) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 544720 + ... + 593169.

It is an arithmetic number, because the mean of its divisors is an integer number (1058237700).

Almost surely, 2^27565361025 is an apocalyptic number.

27565361025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

27565361025 is a deficient number, since it is larger than the sum of its proper divisors (23230048575).

27565361025 is a wasteful number, since it uses less digits than its factorization.

27565361025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1137938 (or 1137933 counting only the distinct ones).

The product of its (nonzero) digits is 378000, while the sum is 42.

The spelling of 27565361025 in words is "twenty-seven billion, five hundred sixty-five million, three hundred sixty-one thousand, twenty-five".