18042762625 has 16 divisors (see below), whose sum is σ = 22543898832. Its totient is φ = 14417203200.

The previous prime is 18042762587. The next prime is 18042762637. The reversal of 18042762625 is 52626724081.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 5607613456 + 12435149169 = 74884^2 + 111513^2 .

It is not a de Polignac number, because 18042762625 - 2²¹ = 18040665473 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22017 + ... + 191233.

It is an arithmetic number, because the mean of its divisors is an integer number (1408993677).

Almost surely, 2^18042762625 is an apocalyptic number.

It is an amenable number.

18042762625 is a deficient number, since it is larger than the sum of its proper divisors (4501136207).

18042762625 is an equidigital number, since it uses as much as digits as its factorization.

18042762625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170085 (or 170075 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 43.

The spelling of 18042762625 in words is "eighteen billion, forty-two million, seven hundred sixty-two thousand, six hundred twenty-five".