27925145077 has 4 divisors (see below), whose sum is σ = 27925752556. Its totient is φ = 27924537600.

The previous prime is 27925144991. The next prime is 27925145099. The reversal of 27925145077 is 77054152972.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4677739236 + 23247405841 = 68394^2 + 152471^2 .

It is a cyclic number.

It is not a de Polignac number, because 27925145077 - 2¹⁵ = 27925112309 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 27925145077.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27925145477) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 228588 + ... + 328789.

It is an arithmetic number, because the mean of its divisors is an integer number (6981438139).

Almost surely, 2^27925145077 is an apocalyptic number.

It is an amenable number.

27925145077 is a deficient number, since it is larger than the sum of its proper divisors (607479).

27925145077 is an equidigital number, since it uses as much as digits as its factorization.

27925145077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 607478.

The product of its (nonzero) digits is 1234800, while the sum is 49.

The spelling of 27925145077 in words is "twenty-seven billion, nine hundred twenty-five million, one hundred forty-five thousand, seventy-seven".