13505531252 has 12 divisors (see below), whose sum is σ = 23919435456. Its totient is φ = 6671406840.

The previous prime is 13505531233. The next prime is 13505531267. The reversal of 13505531252 is 25213550531.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20339324 + ... + 20339987.

It is an arithmetic number, because the mean of its divisors is an integer number (1993286288).

Almost surely, 2^13505531252 is an apocalyptic number.

It is an amenable number.

13505531252 is a deficient number, since it is larger than the sum of its proper divisors (10413904204).

13505531252 is a wasteful number, since it uses less digits than its factorization.

13505531252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40679398 (or 40679396 counting only the distinct ones).

The product of its (nonzero) digits is 22500, while the sum is 32.

The spelling of 13505531252 in words is "thirteen billion, five hundred five million, five hundred thirty-one thousand, two hundred fifty-two".