28535386253 has 4 divisors (see below), whose sum is σ = 31129512288. Its totient is φ = 25941260220.

The previous prime is 28535386223. The next prime is 28535386283. The reversal of 28535386253 is 35268353582.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (28535386223) and next prime (28535386283).

It is a cyclic number.

It is not a de Polignac number, because 28535386253 - 2¹⁶ = 28535320717 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 (28535386223) 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, 1297063001 + ... + 1297063022.

It is an arithmetic number, because the mean of its divisors is an integer number (7782378072).

Almost surely, 2^28535386253 is an apocalyptic number.

It is an amenable number.

28535386253 is a deficient number, since it is larger than the sum of its proper divisors (2594126035).

28535386253 is a wasteful number, since it uses less digits than its factorization.

28535386253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2594126034.

The product of its digits is 5184000, while the sum is 50.

The spelling of 28535386253 in words is "twenty-eight billion, five hundred thirty-five million, three hundred eighty-six thousand, two hundred fifty-three".