27725197651 has 16 divisors (see below), whose sum is σ = 29694246400. Its totient is φ = 25810293600.

The previous prime is 27725197649. The next prime is 27725197663. The reversal of 27725197651 is 15679152772.

It is a cyclic number.

It is not a de Polignac number, because 27725197651 - 2¹ = 27725197649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27725198651) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 272941 + ... + 360481.

It is an arithmetic number, because the mean of its divisors is an integer number (1855890400).

Almost surely, 2^27725197651 is an apocalyptic number.

27725197651 is a deficient number, since it is larger than the sum of its proper divisors (1969048749).

27725197651 is a wasteful number, since it uses less digits than its factorization.

27725197651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87850.

The product of its digits is 1852200, while the sum is 52.

The spelling of 27725197651 in words is "twenty-seven billion, seven hundred twenty-five million, one hundred ninety-seven thousand, six hundred fifty-one".