27806620425 has 48 divisors (see below), whose sum is σ = 46167045120. Its totient is φ = 14767973440.

The previous prime is 27806620417. The next prime is 27806620433. The reversal of 27806620425 is 52402660872.

It is an interprime number because it is at equal distance from previous prime (27806620417) and next prime (27806620433).

It is not a de Polignac number, because 27806620425 - 2³ = 27806620417 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 33142156 + ... + 33142994.

It is an arithmetic number, because the mean of its divisors is an integer number (961813440).

Almost surely, 2^27806620425 is an apocalyptic number.

27806620425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

27806620425 is a deficient number, since it is larger than the sum of its proper divisors (18360424695).

27806620425 is a wasteful number, since it uses less digits than its factorization.

27806620425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2182 (or 2177 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 42.

The spelling of 27806620425 in words is "twenty-seven billion, eight hundred six million, six hundred twenty thousand, four hundred twenty-five".