27505255278025 has 24 divisors (see below), whose sum is σ = 41271751117440. Its totient is φ = 17751290799360.

The previous prime is 27505255277933. The next prime is 27505255278043. The reversal of 27505255278025 is 52087255250572.

It is not a de Polignac number, because 27505255278025 - 2¹⁵ = 27505255245257 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4622729005 + ... + 4622734954.

It is an arithmetic number, because the mean of its divisors is an integer number (1719656296560).

Almost surely, 2^{27505255278025} is an apocalyptic number.

27505255278025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

27505255278025 is a deficient number, since it is larger than the sum of its proper divisors (13766495839415).

27505255278025 is a wasteful number, since it uses less digits than its factorization.

27505255278025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9245463993 (or 9245463988 counting only the distinct ones).

The product of its (nonzero) digits is 19600000, while the sum is 55.

The spelling of 27505255278025 in words is "twenty-seven trillion, five hundred five billion, two hundred fifty-five million, two hundred seventy-eight thousand, twenty-five".