27800025413 has 2 divisors, whose sum is σ = 27800025414. Its totient is φ = 27800025412.

The previous prime is 27800025349. The next prime is 27800025511. The reversal of 27800025413 is 31452000872.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15130722049 + 12669303364 = 123007^2 + 112558^2 .

It is a cyclic number.

It is not a de Polignac number, because 27800025413 - 2⁶ = 27800025349 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 27800025413.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27800021413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13900012706 + 13900012707.

It is an arithmetic number, because the mean of its divisors is an integer number (13900012707).

Almost surely, 2^27800025413 is an apocalyptic number.

It is an amenable number.

27800025413 is a deficient number, since it is larger than the sum of its proper divisors (1).

27800025413 is an equidigital number, since it uses as much as digits as its factorization.

27800025413 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13440, while the sum is 32.

The spelling of 27800025413 in words is "twenty-seven billion, eight hundred million, twenty-five thousand, four hundred thirteen".