27825502553 has 2 divisors, whose sum is σ = 27825502554. Its totient is φ = 27825502552.

The previous prime is 27825502541. The next prime is 27825502559. The reversal of 27825502553 is 35520552872.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22264519369 + 5560983184 = 149213^2 + 74572^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27825502553 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (27825502559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13912751276 + 13912751277.

It is an arithmetic number, because the mean of its divisors is an integer number (13912751277).

Almost surely, 2^27825502553 is an apocalyptic number.

It is an amenable number.

27825502553 is a deficient number, since it is larger than the sum of its proper divisors (1).

27825502553 is an equidigital number, since it uses as much as digits as its factorization.

27825502553 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 840000, while the sum is 44.

The spelling of 27825502553 in words is "twenty-seven billion, eight hundred twenty-five million, five hundred two thousand, five hundred fifty-three".