12535253521 has 8 divisors (see below), whose sum is σ = 14467846464. Its totient is φ = 10638121200.

The previous prime is 12535253519. The next prime is 12535253539.

12535253521 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12535253521 - 2¹ = 12535253519 is a prime.

It is a super-3 number, since 3×12535253521³ (a number of 31 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12535253561) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8864395 + ... + 8865808.

It is an arithmetic number, because the mean of its divisors is an integer number (1808480808).

Almost surely, 2^12535253521 is an apocalyptic number.

It is an amenable number.

12535253521 is a deficient number, since it is larger than the sum of its proper divisors (1932592943).

12535253521 is a wasteful number, since it uses less digits than its factorization.

12535253521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17730311.

The product of its digits is 45000, while the sum is 34.

The spelling of 12535253521 in words is "twelve billion, five hundred thirty-five million, two hundred fifty-three thousand, five hundred twenty-one".