27789140025 has 18 divisors (see below), whose sum is σ = 49773437870. Its totient is φ = 14820874560.

The previous prime is 27789140011. The next prime is 27789140033. The reversal of 27789140025 is 52004198772.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 5371863849 + 22417276176 = 73293^2 + 149724^2 .

It is not a de Polignac number, because 27789140025 - 2⁵ = 27789139993 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 61753420 + ... + 61753869.

Almost surely, 2^27789140025 is an apocalyptic number.

27789140025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

27789140025 is a deficient number, since it is larger than the sum of its proper divisors (21984297845).

27789140025 is a wasteful number, since it uses less digits than its factorization.

27789140025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123507305 (or 123507297 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 45.

The spelling of 27789140025 in words is "twenty-seven billion, seven hundred eighty-nine million, one hundred forty thousand, twenty-five".