13525144551 has 12 divisors (see below), whose sum is σ = 19951986912. Its totient is φ = 8824916736.

The previous prime is 13525144537. The next prime is 13525144583. The reversal of 13525144551 is 15544152531.

13525144551 is a `hidden beast` number, since 1 + 3 + 52 + 51 + 4 + 4 + 551 = 666.

It is not a de Polignac number, because 13525144551 - 2⁶ = 13525144487 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13525144511) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15986746 + ... + 15987591.

It is an arithmetic number, because the mean of its divisors is an integer number (1662665576).

Almost surely, 2^13525144551 is an apocalyptic number.

13525144551 is a deficient number, since it is larger than the sum of its proper divisors (6426842361).

13525144551 is a wasteful number, since it uses less digits than its factorization.

13525144551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31974390 (or 31974387 counting only the distinct ones).

The product of its digits is 60000, while the sum is 36.

It can be divided in two parts, 135 and 25144551, that added together give a triangular number (25144686 = T₇₀₉₁).

The spelling of 13525144551 in words is "thirteen billion, five hundred twenty-five million, one hundred forty-four thousand, five hundred fifty-one".