18134554525 has 6 divisors (see below), whose sum is σ = 22486847642. Its totient is φ = 14507643600.

The previous prime is 18134554523. The next prime is 18134554553. The reversal of 18134554525 is 52545543181.

It can be written as a sum of positive squares in 3 ways, for example, as 3124139236 + 15010415289 = 55894^2 + 122517^2 .

It is not a de Polignac number, because 18134554525 - 2¹ = 18134554523 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 (18134554523) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 362691066 + ... + 362691115.

Almost surely, 2^18134554525 is an apocalyptic number.

It is an amenable number.

18134554525 is a deficient number, since it is larger than the sum of its proper divisors (4352293117).

18134554525 is an equidigital number, since it uses as much as digits as its factorization.

18134554525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 725382191 (or 725382186 counting only the distinct ones).

The product of its digits is 480000, while the sum is 43.

The spelling of 18134554525 in words is "eighteen billion, one hundred thirty-four million, five hundred fifty-four thousand, five hundred twenty-five".