27774639127225 has 9 divisors (see below), whose sum is σ = 34440585192813. Its totient is φ = 22219690221120.

The previous prime is 27774639127093. The next prime is 27774639127247. The reversal of 27774639127225 is 52272193647772.

The square root of 27774639127225 is 5270165.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 9420989225769 + 18353649901456 = 3069363^2 + 4284116^2 .

It is not a de Polignac number, because 27774639127225 - 2¹⁵ = 27774639094457 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 25823809 + ... + 26877841.

Almost surely, 2^{27774639127225} is an apocalyptic number.

27774639127225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

27774639127225 is the 5270165-th square number.

27774639127225 is the 2635083-rd centered octagonal number.

It is an amenable number.

27774639127225 is a deficient number, since it is larger than the sum of its proper divisors (6665946065588).

27774639127225 is an frugal number, since it uses more digits than its factorization.

27774639127225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2108076 (or 1054038 counting only the distinct ones).

The product of its digits is 124467840, while the sum is 64.

The spelling of 27774639127225 in words is "twenty-seven trillion, seven hundred seventy-four billion, six hundred thirty-nine million, one hundred twenty-seven thousand, two hundred twenty-five".