27777340725 has 24 divisors (see below), whose sum is σ = 46610662560. Its totient is φ = 14593465920.

The previous prime is 27777340697. The next prime is 27777340733. The reversal of 27777340725 is 52704377772.

It is not a de Polignac number, because 27777340725 - 2⁵ = 27777340693 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2758890 + ... + 2768939.

It is an arithmetic number, because the mean of its divisors is an integer number (1942110940).

Almost surely, 2^27777340725 is an apocalyptic number.

27777340725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

27777340725 is a deficient number, since it is larger than the sum of its proper divisors (18833321835).

27777340725 is a wasteful number, since it uses less digits than its factorization.

27777340725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5527909 (or 5527904 counting only the distinct ones).

The product of its (nonzero) digits is 4033680, while the sum is 51.

The spelling of 27777340725 in words is "twenty-seven billion, seven hundred seventy-seven million, three hundred forty thousand, seven hundred twenty-five".