27657424325 has 12 divisors (see below), whose sum is σ = 35131675908. Its totient is φ = 21586281600.

The previous prime is 27657424279. The next prime is 27657424331. The reversal of 27657424325 is 52342475672.

It can be written as a sum of positive squares in 6 ways, for example, as 1841611396 + 25815812929 = 42914^2 + 160673^2 .

It is not a de Polignac number, because 27657424325 - 2³⁰ = 26583682501 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 27657424325.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13490402 + ... + 13492451.

It is an arithmetic number, because the mean of its divisors is an integer number (2927639659).

Almost surely, 2^27657424325 is an apocalyptic number.

27657424325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

27657424325 is a deficient number, since it is larger than the sum of its proper divisors (7474251583).

27657424325 is a wasteful number, since it uses less digits than its factorization.

27657424325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26982904 (or 26982899 counting only the distinct ones).

The product of its digits is 2822400, while the sum is 47.

Adding to 27657424325 its reverse (52342475672), we get a palindrome (79999899997).

The spelling of 27657424325 in words is "twenty-seven billion, six hundred fifty-seven million, four hundred twenty-four thousand, three hundred twenty-five".