27505000253 has 4 divisors (see below), whose sum is σ = 27598874268. Its totient is φ = 27411126240.

The previous prime is 27505000241. The next prime is 27505000297. The reversal of 27505000253 is 35200050572.

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 20539762489 + 6965237764 = 143317^2 + 83458^2 .

It is a cyclic number.

It is not a de Polignac number, because 27505000253 - 2⁶ = 27505000189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27505200253) 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, 46936568 + ... + 46937153.

It is an arithmetic number, because the mean of its divisors is an integer number (6899718567).

Almost surely, 2^27505000253 is an apocalyptic number.

It is an amenable number.

27505000253 is a deficient number, since it is larger than the sum of its proper divisors (93874015).

27505000253 is an equidigital number, since it uses as much as digits as its factorization.

27505000253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93874014.

The product of its (nonzero) digits is 10500, while the sum is 29.

The spelling of 27505000253 in words is "twenty-seven billion, five hundred five million, two hundred fifty-three", and thus it is an aban number.