27715773225 has 72 divisors (see below), whose sum is σ = 53345023200. Its totient is φ = 12660506880.

The previous prime is 27715773223. The next prime is 27715773247. The reversal of 27715773225 is 52237751772.

It is not a de Polignac number, because 27715773225 - 2¹ = 27715773223 is a prime.

It is not an unprimeable number, because it can be changed into a prime (27715773223) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 7712029 + ... + 7715621.

It is an arithmetic number, because the mean of its divisors is an integer number (740903100).

Almost surely, 2^27715773225 is an apocalyptic number.

27715773225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

27715773225 is a deficient number, since it is larger than the sum of its proper divisors (25629249975).

27715773225 is a wasteful number, since it uses less digits than its factorization.

27715773225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5719 (or 5707 counting only the distinct ones).

The product of its digits is 1440600, while the sum is 48.

The spelling of 27715773225 in words is "twenty-seven billion, seven hundred fifteen million, seven hundred seventy-three thousand, two hundred twenty-five".