27640025025 has 36 divisors (see below), whose sum is σ = 48544465872. Its totient is φ = 13874197760.

The previous prime is 27640024949. The next prime is 27640025047. The reversal of 27640025025 is 52052004672.

It is not a de Polignac number, because 27640025025 - 2¹⁰ = 27640024001 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 615927 + ... + 659276.

Almost surely, 2^27640025025 is an apocalyptic number.

27640025025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

27640025025 is a deficient number, since it is larger than the sum of its proper divisors (20904440847).

27640025025 is a wasteful number, since it uses less digits than its factorization.

27640025025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1275250 (or 1275228 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 33.

Adding to 27640025025 its reverse (52052004672), we get a palindrome (79692029697).

The spelling of 27640025025 in words is "twenty-seven billion, six hundred forty million, twenty-five thousand, twenty-five".