27500250025 has 6 divisors (see below), whose sum is σ = 34100310062. Its totient is φ = 22000200000.

The previous prime is 27500250017. The next prime is 27500250053. The reversal of 27500250025 is 52005200572.

It can be written as a sum of positive squares in 3 ways, for example, as 297355536 + 27202894489 = 17244^2 + 164933^2 .

It is not a de Polignac number, because 27500250025 - 2³ = 27500250017 is a prime.

It is a Duffinian number.

27500250025 is a modest number, since divided by 250025 gives 275 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 27500249975 and 27500250002.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 550004976 + ... + 550005025.

Almost surely, 2^27500250025 is an apocalyptic number.

27500250025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

27500250025 is a deficient number, since it is larger than the sum of its proper divisors (6600060037).

27500250025 is a wasteful number, since it uses less digits than its factorization.

27500250025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1100010011 (or 1100010006 counting only the distinct ones).

The product of its (nonzero) digits is 7000, while the sum is 28.

Adding to 27500250025 its reverse (52005200572), we get a palindrome (79505450597).

The spelling of 27500250025 in words is "twenty-seven billion, five hundred million, two hundred fifty thousand, twenty-five".